* [PATCH 0/2] btrfs: convert btrfs_buffered_write() to folio interface
@ 2024-10-10 4:46 Qu Wenruo
2024-10-10 4:46 ` [PATCH 1/2] btrfs: make buffered write to copy one page a time Qu Wenruo
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Qu Wenruo @ 2024-10-10 4:46 UTC (permalink / raw)
To: linux-btrfs
Inspired by generic_perform_write(), convert btrfs_buffered_write() to
go a page-by-page iteration, then convert it to use folio interface.
This should provide the basis for use to go
address_operations->write_begin() and write_end() callbacks.
There is a tiny timing change.
Before this patchset we wait for the page writeback after we get an
uptodate or no need to read the page.
But now we follow the regular FGP_WRITEBEGIN, which implies FGP_STABLE
and will wait for writeback before reading the page.
Qu Wenruo (2):
btrfs: make buffered write to copy one page a time
btrfs: convert btrfs_buffered_write() to use folio interface
fs/btrfs/file.c | 259 +++++++++++++-----------------------
fs/btrfs/file.h | 2 +-
fs/btrfs/free-space-cache.c | 15 ++-
3 files changed, 102 insertions(+), 174 deletions(-)
--
2.46.2
^ permalink raw reply [flat|nested] 6+ messages in thread* [PATCH 1/2] btrfs: make buffered write to copy one page a time 2024-10-10 4:46 [PATCH 0/2] btrfs: convert btrfs_buffered_write() to folio interface Qu Wenruo @ 2024-10-10 4:46 ` Qu Wenruo 2024-10-17 7:08 ` kernel test robot 2024-10-10 4:46 ` [PATCH 2/2] btrfs: convert btrfs_buffered_write() to use folio interface Qu Wenruo 2024-10-22 1:17 ` [PATCH 0/2] btrfs: convert btrfs_buffered_write() to " David Sterba 2 siblings, 1 reply; 6+ messages in thread From: Qu Wenruo @ 2024-10-10 4:46 UTC (permalink / raw) To: linux-btrfs Currently the btrfs_buffered_write() is preparing multiple page a time, allowing a better performance. But the current trend is to support larger folio as an optimization, instead of implementing a proprietary multi-page optimization. This is inspired by generic_perform_write(), which is copying one folio a time. Such change will prepare us to migrate to implement the write_begin() and write_end() call backs, and make every involved function a little easier. Signed-off-by: Qu Wenruo <wqu@suse.com> --- fs/btrfs/file.c | 236 +++++++++++++----------------------- fs/btrfs/file.h | 6 +- fs/btrfs/free-space-cache.c | 15 ++- 3 files changed, 98 insertions(+), 159 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 160d77f8eb6f..fae59acb3b8a 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -37,22 +37,21 @@ #include "file.h" #include "super.h" -/* simple helper to fault in pages and copy. This should go away +/* + * Simple helper to fault in page and copy. This should go away * and be replaced with calls into generic code. */ static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes, - struct page **prepared_pages, + struct page *page, struct iov_iter *i) { size_t copied = 0; size_t total_copied = 0; - int pg = 0; int offset = offset_in_page(pos); while (write_bytes > 0) { - size_t count = min_t(size_t, - PAGE_SIZE - offset, write_bytes); - struct page *page = prepared_pages[pg]; + size_t count = min_t(size_t, PAGE_SIZE - offset, + write_bytes); /* * Copy data from userspace to the current page */ @@ -63,7 +62,7 @@ static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes, /* * if we get a partial write, we can end up with - * partially up to date pages. These add + * partially up to date page. These add * a lot of complexity, so make sure they don't * happen by forcing this copy to be retried. * @@ -82,10 +81,6 @@ static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes, write_bytes -= copied; total_copied += copied; offset += copied; - if (offset == PAGE_SIZE) { - pg++; - offset = 0; - } } return total_copied; } @@ -93,27 +88,24 @@ static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes, /* * unlocks pages after btrfs_file_write is done with them */ -static void btrfs_drop_pages(struct btrfs_fs_info *fs_info, - struct page **pages, size_t num_pages, - u64 pos, u64 copied) +static void btrfs_drop_page(struct btrfs_fs_info *fs_info, + struct page *page, u64 pos, u64 copied) { - size_t i; u64 block_start = round_down(pos, fs_info->sectorsize); u64 block_len = round_up(pos + copied, fs_info->sectorsize) - block_start; ASSERT(block_len <= U32_MAX); - for (i = 0; i < num_pages; i++) { - /* page checked is some magic around finding pages that - * have been modified without going through btrfs_set_page_dirty - * clear it here. There should be no need to mark the pages - * accessed as prepare_pages should have marked them accessed - * in prepare_pages via find_or_create_page() - */ - btrfs_folio_clamp_clear_checked(fs_info, page_folio(pages[i]), - block_start, block_len); - unlock_page(pages[i]); - put_page(pages[i]); - } + /* + * Page checked is some magic around finding pages that + * have been modified without going through btrfs_set_page_dirty + * clear it here. There should be no need to mark the pages + * accessed as prepare_one_page() should have marked them accessed + * in prepare_one_page() via find_or_create_page() + */ + btrfs_folio_clamp_clear_checked(fs_info, page_folio(page), + block_start, block_len); + unlock_page(page); + put_page(page); } /* @@ -123,19 +115,17 @@ static void btrfs_drop_pages(struct btrfs_fs_info *fs_info, * - Mark modified pages as Uptodate/Dirty and not needing COW fixup * - Update inode size for past EOF write */ -int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages, - loff_t pos, size_t write_bytes, - struct extent_state **cached, bool noreserve) +int btrfs_dirty_page(struct btrfs_inode *inode, struct page *page, + loff_t pos, size_t write_bytes, + struct extent_state **cached, bool noreserve) { struct btrfs_fs_info *fs_info = inode->root->fs_info; int ret = 0; - int i; - const int num_pages = (round_up(pos + write_bytes, PAGE_SIZE) - - round_down(pos, PAGE_SIZE)) >> PAGE_SHIFT; u64 num_bytes; u64 start_pos; u64 end_of_last_block; u64 end_pos = pos + write_bytes; + struct folio *folio = page_folio(page); loff_t isize = i_size_read(&inode->vfs_inode); unsigned int extra_bits = 0; @@ -149,6 +139,8 @@ int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages, num_bytes = round_up(write_bytes + pos - start_pos, fs_info->sectorsize); ASSERT(num_bytes <= U32_MAX); + ASSERT(folio_pos(folio) <= pos && + folio_pos(folio) + folio_size(folio) >= pos + write_bytes); end_of_last_block = start_pos + num_bytes - 1; @@ -165,16 +157,9 @@ int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages, if (ret) return ret; - for (i = 0; i < num_pages; i++) { - struct page *p = pages[i]; - - btrfs_folio_clamp_set_uptodate(fs_info, page_folio(p), - start_pos, num_bytes); - btrfs_folio_clamp_clear_checked(fs_info, page_folio(p), - start_pos, num_bytes); - btrfs_folio_clamp_set_dirty(fs_info, page_folio(p), - start_pos, num_bytes); - } + btrfs_folio_clamp_set_uptodate(fs_info, folio, start_pos, num_bytes); + btrfs_folio_clamp_clear_checked(fs_info, folio, start_pos, num_bytes); + btrfs_folio_clamp_set_dirty(fs_info, folio, start_pos, num_bytes); /* * we've only changed i_size in ram, and we haven't updated @@ -922,62 +907,48 @@ static gfp_t get_prepare_gfp_flags(struct inode *inode, bool nowait) } /* - * this just gets pages into the page cache and locks them down. + * this just gets page into the page cache and locks them down. */ -static noinline int prepare_pages(struct inode *inode, struct page **pages, - size_t num_pages, loff_t pos, - size_t write_bytes, bool force_uptodate, - bool nowait) +static noinline int prepare_one_page(struct inode *inode, struct page **page_ret, + loff_t pos, size_t write_bytes, + bool force_uptodate, bool nowait) { - int i; unsigned long index = pos >> PAGE_SHIFT; gfp_t mask = get_prepare_gfp_flags(inode, nowait); fgf_t fgp_flags = get_prepare_fgp_flags(nowait); + struct page *page; int ret = 0; - int faili; - for (i = 0; i < num_pages; i++) { again: - pages[i] = pagecache_get_page(inode->i_mapping, index + i, - fgp_flags, mask | __GFP_WRITE); - if (!pages[i]) { - faili = i - 1; - if (nowait) - ret = -EAGAIN; - else - ret = -ENOMEM; - goto fail; - } - - ret = set_page_extent_mapped(pages[i]); - if (ret < 0) { - faili = i; - goto fail; - } - - ret = prepare_uptodate_page(inode, pages[i], pos, write_bytes, - force_uptodate); - if (ret) { - put_page(pages[i]); - if (!nowait && ret == -EAGAIN) { - ret = 0; - goto again; - } - faili = i - 1; - goto fail; - } - wait_on_page_writeback(pages[i]); + page = pagecache_get_page(inode->i_mapping, index, fgp_flags, + mask | __GFP_WRITE); + if (!page) { + if (nowait) + ret = -EAGAIN; + else + ret = -ENOMEM; + return ret; } - + ret = set_page_extent_mapped(page); + if (ret < 0) { + unlock_page(page); + put_page(page); + return ret; + } + ret = prepare_uptodate_page(inode, page, pos, write_bytes, + force_uptodate); + if (ret) { + /* The page is already unlocked. */ + put_page(page); + if (!nowait && ret == -EAGAIN) { + ret = 0; + goto again; + } + return ret; + } + wait_on_page_writeback(page); + *page_ret = page; return 0; -fail: - while (faili >= 0) { - unlock_page(pages[faili]); - put_page(pages[faili]); - faili--; - } - return ret; - } /* @@ -988,19 +959,16 @@ static noinline int prepare_pages(struct inode *inode, struct page **pages, * 1 - the extent is locked * 0 - the extent is not locked, and everything is OK * -EAGAIN - need re-prepare the pages - * the other < 0 number - Something wrong happens */ static noinline int -lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page **pages, - size_t num_pages, loff_t pos, - size_t write_bytes, +lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page *page, + loff_t pos, size_t write_bytes, u64 *lockstart, u64 *lockend, bool nowait, struct extent_state **cached_state) { struct btrfs_fs_info *fs_info = inode->root->fs_info; u64 start_pos; u64 last_pos; - int i; int ret = 0; start_pos = round_down(pos, fs_info->sectorsize); @@ -1012,12 +980,8 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page **pages, if (nowait) { if (!try_lock_extent(&inode->io_tree, start_pos, last_pos, cached_state)) { - for (i = 0; i < num_pages; i++) { - unlock_page(pages[i]); - put_page(pages[i]); - pages[i] = NULL; - } - + unlock_page(page); + put_page(page); return -EAGAIN; } } else { @@ -1031,10 +995,8 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page **pages, ordered->file_offset <= last_pos) { unlock_extent(&inode->io_tree, start_pos, last_pos, cached_state); - for (i = 0; i < num_pages; i++) { - unlock_page(pages[i]); - put_page(pages[i]); - } + unlock_page(page); + put_page(page); btrfs_start_ordered_extent(ordered); btrfs_put_ordered_extent(ordered); return -EAGAIN; @@ -1048,11 +1010,10 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page **pages, } /* - * We should be called after prepare_pages() which should have locked + * We should be called after prepare_one_page() which should have locked * all pages in the range. */ - for (i = 0; i < num_pages; i++) - WARN_ON(!PageLocked(pages[i])); + WARN_ON(!PageLocked(page)); return ret; } @@ -1196,20 +1157,17 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) loff_t pos; struct inode *inode = file_inode(file); struct btrfs_fs_info *fs_info = inode_to_fs_info(inode); - struct page **pages = NULL; struct extent_changeset *data_reserved = NULL; u64 release_bytes = 0; u64 lockstart; u64 lockend; size_t num_written = 0; - int nrptrs; ssize_t ret; - bool only_release_metadata = false; - bool force_page_uptodate = false; loff_t old_isize = i_size_read(inode); unsigned int ilock_flags = 0; const bool nowait = (iocb->ki_flags & IOCB_NOWAIT); unsigned int bdp_flags = (nowait ? BDP_ASYNC : 0); + bool only_release_metadata = false; if (nowait) ilock_flags |= BTRFS_ILOCK_TRY; @@ -1227,32 +1185,22 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) goto out; pos = iocb->ki_pos; - nrptrs = min(DIV_ROUND_UP(iov_iter_count(i), PAGE_SIZE), - PAGE_SIZE / (sizeof(struct page *))); - nrptrs = min(nrptrs, current->nr_dirtied_pause - current->nr_dirtied); - nrptrs = max(nrptrs, 8); - pages = kmalloc_array(nrptrs, sizeof(struct page *), GFP_KERNEL); - if (!pages) { - ret = -ENOMEM; - goto out; - } - while (iov_iter_count(i) > 0) { struct extent_state *cached_state = NULL; size_t offset = offset_in_page(pos); size_t sector_offset; size_t write_bytes = min(iov_iter_count(i), - nrptrs * (size_t)PAGE_SIZE - - offset); - size_t num_pages; + PAGE_SIZE - offset); size_t reserve_bytes; size_t copied; size_t dirty_sectors; size_t num_sectors; + struct page *page = NULL; int extents_locked; + bool force_page_uptodate = false; /* - * Fault pages before locking them in prepare_pages + * Fault pages before locking them in prepare_one_page() * to avoid recursive lock */ if (unlikely(fault_in_iov_iter_readable(i, write_bytes))) { @@ -1291,8 +1239,6 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) only_release_metadata = true; } - num_pages = DIV_ROUND_UP(write_bytes + offset, PAGE_SIZE); - WARN_ON(num_pages > nrptrs); reserve_bytes = round_up(write_bytes + sector_offset, fs_info->sectorsize); WARN_ON(reserve_bytes == 0); @@ -1320,13 +1266,8 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) break; } - /* - * This is going to setup the pages array with the number of - * pages we want, so we don't really need to worry about the - * contents of pages from loop to loop - */ - ret = prepare_pages(inode, pages, num_pages, - pos, write_bytes, force_page_uptodate, false); + ret = prepare_one_page(inode, &page, pos, write_bytes, + force_page_uptodate, false); if (ret) { btrfs_delalloc_release_extents(BTRFS_I(inode), reserve_bytes); @@ -1334,8 +1275,8 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) } extents_locked = lock_and_cleanup_extent_if_need( - BTRFS_I(inode), pages, - num_pages, pos, write_bytes, &lockstart, + BTRFS_I(inode), page, + pos, write_bytes, &lockstart, &lockend, nowait, &cached_state); if (extents_locked < 0) { if (!nowait && extents_locked == -EAGAIN) @@ -1347,20 +1288,13 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) break; } - copied = btrfs_copy_from_user(pos, write_bytes, pages, i); + copied = btrfs_copy_from_user(pos, write_bytes, page, i); num_sectors = BTRFS_BYTES_TO_BLKS(fs_info, reserve_bytes); dirty_sectors = round_up(copied + sector_offset, fs_info->sectorsize); dirty_sectors = BTRFS_BYTES_TO_BLKS(fs_info, dirty_sectors); - /* - * if we have trouble faulting in the pages, fall - * back to one page at a time - */ - if (copied < write_bytes) - nrptrs = 1; - if (copied == 0) { force_page_uptodate = true; dirty_sectors = 0; @@ -1386,15 +1320,15 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) release_bytes = round_up(copied + sector_offset, fs_info->sectorsize); - ret = btrfs_dirty_pages(BTRFS_I(inode), pages, - pos, copied, - &cached_state, only_release_metadata); + ret = btrfs_dirty_page(BTRFS_I(inode), page, + pos, copied, &cached_state, + only_release_metadata); /* * If we have not locked the extent range, because the range's * start offset is >= i_size, we might still have a non-NULL * cached extent state, acquired while marking the extent range - * as delalloc through btrfs_dirty_pages(). Therefore free any + * as delalloc through btrfs_dirty_page(). Therefore free any * possible cached extent state to avoid a memory leak. */ if (extents_locked) @@ -1405,7 +1339,7 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) btrfs_delalloc_release_extents(BTRFS_I(inode), reserve_bytes); if (ret) { - btrfs_drop_pages(fs_info, pages, num_pages, pos, copied); + btrfs_drop_page(fs_info, page, pos, copied); break; } @@ -1413,7 +1347,7 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) if (only_release_metadata) btrfs_check_nocow_unlock(BTRFS_I(inode)); - btrfs_drop_pages(fs_info, pages, num_pages, pos, copied); + btrfs_drop_page(fs_info, page, pos, copied); cond_resched(); @@ -1421,8 +1355,6 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) num_written += copied; } - kfree(pages); - if (release_bytes) { if (only_release_metadata) { btrfs_check_nocow_unlock(BTRFS_I(inode)); diff --git a/fs/btrfs/file.h b/fs/btrfs/file.h index c23d0bf42598..5316d971f6ef 100644 --- a/fs/btrfs/file.h +++ b/fs/btrfs/file.h @@ -34,9 +34,9 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, ssize_t btrfs_do_write_iter(struct kiocb *iocb, struct iov_iter *from, const struct btrfs_ioctl_encoded_io_args *encoded); int btrfs_release_file(struct inode *inode, struct file *file); -int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages, - loff_t pos, size_t write_bytes, - struct extent_state **cached, bool noreserve); +int btrfs_dirty_page(struct btrfs_inode *inode, struct page *page, + loff_t pos, size_t write_bytes, + struct extent_state **cached, bool noreserve); int btrfs_fdatawrite_range(struct btrfs_inode *inode, loff_t start, loff_t end); int btrfs_check_nocow_lock(struct btrfs_inode *inode, loff_t pos, size_t *write_bytes, bool nowait); diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 0d2db205b9f6..ec34b85dd0e5 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -1387,6 +1387,7 @@ static int __btrfs_write_out_cache(struct inode *inode, int bitmaps = 0; int ret; int must_iput = 0; + int i_size; if (!i_size_read(inode)) return -EIO; @@ -1457,10 +1458,16 @@ static int __btrfs_write_out_cache(struct inode *inode, io_ctl_zero_remaining_pages(io_ctl); /* Everything is written out, now we dirty the pages in the file. */ - ret = btrfs_dirty_pages(BTRFS_I(inode), io_ctl->pages, 0, i_size_read(inode), - &cached_state, false); - if (ret) - goto out_nospc; + i_size = i_size_read(inode); + for (int i = 0; i < round_up(i_size, PAGE_SIZE) / PAGE_SIZE; i++) { + u64 dirty_start = i * PAGE_SIZE; + u64 dirty_len = min_t(u64, dirty_start + PAGE_SIZE, i_size) - dirty_start; + + ret = btrfs_dirty_page(BTRFS_I(inode), io_ctl->pages[i], + dirty_start, dirty_len, &cached_state, false); + if (ret < 0) + goto out_nospc; + } if (block_group && (block_group->flags & BTRFS_BLOCK_GROUP_DATA)) up_write(&block_group->data_rwsem); -- 2.46.2 ^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] btrfs: make buffered write to copy one page a time 2024-10-10 4:46 ` [PATCH 1/2] btrfs: make buffered write to copy one page a time Qu Wenruo @ 2024-10-17 7:08 ` kernel test robot 0 siblings, 0 replies; 6+ messages in thread From: kernel test robot @ 2024-10-17 7:08 UTC (permalink / raw) To: Qu Wenruo Cc: oe-lkp, lkp, linux-btrfs, ying.huang, feng.tang, fengwei.yin, oliver.sang Hello, kernel test robot noticed a 16.0% regression of iozone.average_KBps on: commit: eeeea160c640d8eb91dc3d6dc48be26c2c37457c ("[PATCH 1/2] btrfs: make buffered write to copy one page a time") url: https://github.com/intel-lab-lkp/linux/commits/Qu-Wenruo/btrfs-make-buffered-write-to-copy-one-page-a-time/20241010-124734 base: https://git.kernel.org/cgit/linux/kernel/git/kdave/linux.git for-next patch link: https://lore.kernel.org/all/0d6f8e54faafe6dba9be2f72e6d0fca99951ddfd.1728532438.git.wqu@suse.com/ patch subject: [PATCH 1/2] btrfs: make buffered write to copy one page a time testcase: iozone config: x86_64-rhel-8.3 compiler: gcc-12 test machine: 224 threads 4 sockets Intel(R) Xeon(R) Platinum 8380H CPU @ 2.90GHz (Cooper Lake) with 192G memory parameters: disk: 2HDD fs: btrfs iosched: kyber cpufreq_governor: performance If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <oliver.sang@intel.com> | Closes: https://lore.kernel.org/oe-lkp/202410171456.b6cdebb1-oliver.sang@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20241017/202410171456.b6cdebb1-oliver.sang@intel.com ========================================================================================= compiler/cpufreq_governor/disk/fs/iosched/kconfig/rootfs/tbox_group/testcase: gcc-12/performance/2HDD/btrfs/kyber/x86_64-rhel-8.3/debian-12-x86_64-20240206.cgz/lkp-cpl-4sp2/iozone commit: a6f63ff0d7 ("Merge branch 'for-next-next-v6.12-20241009' into for-next-20241009") eeeea160c6 ("btrfs: make buffered write to copy one page a time") a6f63ff0d7025c54 eeeea160c640d8eb91dc3d6dc48 ---------------- --------------------------- %stddev %change %stddev \ | \ 0.04 +0.0 0.04 mpstat.cpu.all.sys% 1998642 ± 84% -68.0% 638956 ± 37% numa-numastat.node0.local_node 2099811 ± 80% -65.2% 730619 ± 31% numa-numastat.node0.numa_hit 2099377 ± 80% -65.2% 730368 ± 31% numa-vmstat.node0.numa_hit 1998208 ± 84% -68.0% 638705 ± 37% numa-vmstat.node0.numa_local 64443 ± 4% +6.8% 68808 ± 2% proc-vmstat.nr_zone_write_pending 7331 ± 79% +138.8% 17505 ± 16% proc-vmstat.numa_hint_faults 95857 ± 48% +65.7% 158842 ± 11% proc-vmstat.numa_pte_updates 137921 +2.1% 140815 proc-vmstat.pgreuse 9.03 ± 2% -19.9% 7.23 ± 3% perf-stat.i.MPKI 99780778 ± 3% +20.9% 1.207e+08 ± 3% perf-stat.i.branch-instructions 1.22 -0.1 1.15 perf-stat.i.branch-miss-rate% 5.024e+08 ± 3% +22.7% 6.164e+08 ± 3% perf-stat.i.instructions 0.71 +7.1% 0.76 perf-stat.i.ipc 7.75 -15.9% 6.52 ± 2% perf-stat.overall.MPKI 2.18 ± 2% -0.3 1.90 perf-stat.overall.branch-miss-rate% 99931564 ± 3% +20.8% 1.207e+08 ± 3% perf-stat.ps.branch-instructions 5.032e+08 ± 3% +22.6% 6.168e+08 ± 3% perf-stat.ps.instructions 6.001e+11 ± 3% +22.4% 7.348e+11 ± 3% perf-stat.total.instructions 0.55 ± 47% +0.4 0.94 ± 9% perf-profile.calltrace.cycles-pp.write 0.40 ± 71% +0.5 0.86 ± 10% perf-profile.calltrace.cycles-pp.btrfs_buffered_write.btrfs_do_write_iter.vfs_write.ksys_write.do_syscall_64 0.41 ± 71% +0.5 0.87 ± 9% perf-profile.calltrace.cycles-pp.btrfs_do_write_iter.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.43 ± 71% +0.5 0.90 ± 10% perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 0.44 ± 71% +0.5 0.92 ± 9% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 0.44 ± 71% +0.5 0.92 ± 9% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write 0.44 ± 71% +0.5 0.91 ± 10% perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 0.16 ± 12% -0.0 0.12 ± 7% perf-profile.children.cycles-pp.run_posix_cpu_timers 0.02 ±141% +0.1 0.09 ± 46% perf-profile.children.cycles-pp.btrfs_delalloc_reserve_metadata 0.00 +0.1 0.08 ± 29% perf-profile.children.cycles-pp.prepare_one_page 0.07 ± 53% +0.1 0.17 ± 31% perf-profile.children.cycles-pp.__clear_extent_bit 0.00 +0.3 0.27 ± 18% perf-profile.children.cycles-pp.btrfs_dirty_page 0.60 ± 29% +0.3 0.95 ± 9% perf-profile.children.cycles-pp.write 0.52 ± 28% +0.3 0.87 ± 9% perf-profile.children.cycles-pp.btrfs_buffered_write 0.56 ± 28% +0.3 0.91 ± 10% perf-profile.children.cycles-pp.vfs_write 0.52 ± 28% +0.4 0.87 ± 9% perf-profile.children.cycles-pp.btrfs_do_write_iter 0.56 ± 28% +0.4 0.92 ± 10% perf-profile.children.cycles-pp.ksys_write 0.23 ± 8% -0.0 0.19 ± 8% perf-profile.self.cycles-pp.sysvec_apic_timer_interrupt 0.16 ± 12% -0.0 0.12 ± 7% perf-profile.self.cycles-pp.run_posix_cpu_timers 542043 -20.2% 432357 iozone.1024KB_1024reclen 9097871 ± 4% -57.3% 3886841 ± 8% iozone.1024KB_1024reclen.frewrite 9632899 ± 2% -57.6% 4083590 ± 3% iozone.1024KB_1024reclen.fwrite 9773507 -58.4% 4068268 ± 5% iozone.1024KB_1024reclen.random_write 9246355 ± 11% -54.7% 4192127 iozone.1024KB_1024reclen.record_rewrite 7060912 ± 3% -50.5% 3495651 ± 2% iozone.1024KB_1024reclen.rewrite 5854028 ± 11% -35.9% 3751337 ± 2% iozone.1024KB_1024reclen.write 8683596 ± 22% -55.1% 3898752 ± 13% iozone.1024KB_128reclen.frewrite 8147547 ± 30% -52.2% 3896196 ± 17% iozone.1024KB_128reclen.fwrite 11646693 ± 9% -61.2% 4517455 ± 5% iozone.1024KB_128reclen.random_write 17030272 ± 7% -73.1% 4582005 ± 2% iozone.1024KB_128reclen.record_rewrite 6710074 ± 24% -49.9% 3362845 ± 14% iozone.1024KB_128reclen.rewrite 5304511 ± 18% -31.5% 3635821 ± 9% iozone.1024KB_16reclen.frewrite 5599329 ± 12% -31.5% 3835223 ± 10% iozone.1024KB_16reclen.fwrite 6420412 ± 12% -37.5% 4015161 ± 3% iozone.1024KB_16reclen.random_write 8956010 -53.0% 4204864 ± 4% iozone.1024KB_16reclen.record_rewrite 5400865 ± 4% -36.4% 3433675 ± 8% iozone.1024KB_16reclen.rewrite 5057394 ± 4% -26.2% 3731322 ± 7% iozone.1024KB_16reclen.write 10659137 ± 4% -57.5% 4524846 ± 14% iozone.1024KB_256reclen.frewrite 9600316 ± 16% -53.8% 4433287 ± 18% iozone.1024KB_256reclen.fwrite 12086394 ± 7% -62.1% 4581666 ± 5% iozone.1024KB_256reclen.random_write 18674893 ± 3% -75.0% 4662367 ± 2% iozone.1024KB_256reclen.record_rewrite 6954389 ± 24% -53.5% 3237090 ± 15% iozone.1024KB_256reclen.rewrite 6511047 ± 22% -45.8% 3528011 ± 13% iozone.1024KB_32reclen.frewrite 6991276 ± 19% -45.7% 3797465 ± 13% iozone.1024KB_32reclen.fwrite 8883588 ± 8% -50.7% 4377528 ± 3% iozone.1024KB_32reclen.random_write 12071763 ± 4% -64.2% 4316696 iozone.1024KB_32reclen.record_rewrite 5838377 ± 19% -43.2% 3317402 ± 14% iozone.1024KB_32reclen.rewrite 8226792 ± 4% +6.4% 8755907 iozone.1024KB_4reclen.random_read 3385272 +3.1% 3491635 iozone.1024KB_4reclen.record_rewrite 2820123 ± 5% +5.4% 2971591 iozone.1024KB_4reclen.rewrite 705144 ± 3% -21.2% 555839 ± 2% iozone.1024KB_512reclen 13870147 ± 4% -51.6% 6708400 ± 12% iozone.1024KB_512reclen.frewrite 5714601 ± 6% -28.5% 4086432 ± 8% iozone.1024KB_512reclen.fwrite 12128304 ± 4% -63.6% 4417054 ± 7% iozone.1024KB_512reclen.random_write 15557904 -70.4% 4597540 iozone.1024KB_512reclen.record_rewrite 7655911 ± 5% -51.7% 3695523 ± 3% iozone.1024KB_512reclen.rewrite 6998972 ± 4% -42.9% 3996083 ± 6% iozone.1024KB_512reclen.write 7531595 ± 23% -50.8% 3701834 ± 16% iozone.1024KB_64reclen.frewrite 7586858 ± 27% -51.8% 3657647 ± 18% iozone.1024KB_64reclen.fwrite 10537091 ± 10% -58.1% 4410056 ± 5% iozone.1024KB_64reclen.random_write 14724491 ± 7% -69.4% 4504235 ± 2% iozone.1024KB_64reclen.record_rewrite 6233206 ± 24% -48.9% 3184404 ± 16% iozone.1024KB_64reclen.rewrite 4583844 ± 2% -23.5% 3507804 iozone.1024KB_8reclen.frewrite 4836398 -24.3% 3660722 iozone.1024KB_8reclen.random_write 5725197 ± 9% -28.2% 4110803 iozone.1024KB_8reclen.record_rewrite 4226568 ± 3% -22.8% 3263105 ± 8% iozone.1024KB_8reclen.rewrite 958137 ± 3% -12.4% 839054 ± 7% iozone.128KB_128reclen 8738751 ± 6% -58.6% 3617394 ± 22% iozone.128KB_128reclen.frewrite 9185212 ± 2% -59.6% 3713555 ± 20% iozone.128KB_128reclen.fwrite 11038193 ± 2% -58.9% 4542068 iozone.128KB_128reclen.random_write 10983805 ± 3% -63.0% 4068594 ± 17% iozone.128KB_128reclen.record_rewrite 6397989 ± 8% -49.6% 3221561 ± 11% iozone.128KB_128reclen.rewrite 5394780 ± 9% -40.7% 3196876 ± 17% iozone.128KB_128reclen.write 5788254 ± 5% -31.2% 3984232 ± 5% iozone.128KB_16reclen.frewrite 5282205 ± 11% -26.0% 3906918 ± 8% iozone.128KB_16reclen.fwrite 6110253 ± 8% -38.0% 3787704 ± 7% iozone.128KB_16reclen.random_write 7310434 ± 3% -47.3% 3854735 ± 2% iozone.128KB_16reclen.record_rewrite 4233865 ± 9% -31.2% 2913969 ± 20% iozone.128KB_16reclen.write 7153424 ± 12% -38.8% 4380585 ± 9% iozone.128KB_32reclen.frewrite 6781060 ± 14% -32.6% 4569325 ± 7% iozone.128KB_32reclen.fwrite 8272460 ± 2% -49.1% 4212237 ± 2% iozone.128KB_32reclen.random_write 9058701 ± 4% -57.3% 3865827 ± 8% iozone.128KB_32reclen.record_rewrite 5670379 ± 8% -42.0% 3290422 ± 6% iozone.128KB_32reclen.rewrite 4886671 ± 8% -30.9% 3378247 ± 7% iozone.128KB_32reclen.write 10953435 ± 4% -45.0% 6027905 ± 18% iozone.128KB_64reclen.frewrite 5211701 ± 15% -26.1% 3851838 ± 6% iozone.128KB_64reclen.fwrite 9901762 ± 3% -55.0% 4457872 ± 2% iozone.128KB_64reclen.random_write 10619616 ± 3% -64.1% 3817487 ± 14% iozone.128KB_64reclen.record_rewrite 5921763 ± 14% -41.8% 3446338 ± 7% iozone.128KB_64reclen.rewrite 5102284 ± 10% -33.3% 3400985 ± 9% iozone.128KB_64reclen.write 4429298 ± 5% -20.9% 3502551 ± 5% iozone.128KB_8reclen.frewrite 4245188 ± 8% -24.6% 3201936 ± 18% iozone.128KB_8reclen.fwrite 4598068 -29.4% 3247543 ± 13% iozone.128KB_8reclen.random_write 385560 -17.4% 318351 iozone.131072KB_1024reclen 4226504 -38.1% 2617224 iozone.131072KB_1024reclen.frewrite 4248661 -38.3% 2622832 iozone.131072KB_1024reclen.fwrite 4872229 ± 2% -42.1% 2820516 iozone.131072KB_1024reclen.random_write 12985870 -69.8% 3922393 iozone.131072KB_1024reclen.record_rewrite 4187877 -38.8% 2565012 iozone.131072KB_1024reclen.rewrite 3672037 ± 4% -26.8% 2686945 iozone.131072KB_1024reclen.write 448736 -19.4% 361855 iozone.131072KB_128reclen 4268447 -38.3% 2631749 iozone.131072KB_128reclen.frewrite 4323348 -39.0% 2638197 iozone.131072KB_128reclen.fwrite 4622813 -42.1% 2678604 iozone.131072KB_128reclen.random_write 19501625 -76.0% 4672640 iozone.131072KB_128reclen.record_rewrite 4027166 -37.8% 2505861 iozone.131072KB_128reclen.rewrite 3673398 -28.7% 2620321 iozone.131072KB_128reclen.write 343686 ± 2% -12.9% 299492 ± 2% iozone.131072KB_16384reclen 3478793 -30.9% 2404333 iozone.131072KB_16384reclen.frewrite 3553351 -31.4% 2437960 ± 2% iozone.131072KB_16384reclen.fwrite 4601231 -39.9% 2764435 iozone.131072KB_16384reclen.random_write 7507491 ± 2% -58.5% 3118015 iozone.131072KB_16384reclen.record_rewrite 4036137 -38.0% 2501444 ± 2% iozone.131072KB_16384reclen.rewrite 3628587 -28.2% 2606651 iozone.131072KB_16384reclen.write 366856 -14.8% 312456 iozone.131072KB_2048reclen 4072963 -37.1% 2560087 iozone.131072KB_2048reclen.frewrite 4113190 -37.2% 2582822 iozone.131072KB_2048reclen.fwrite 4757567 -40.9% 2809962 iozone.131072KB_2048reclen.random_write 10030466 -63.4% 3675841 iozone.131072KB_2048reclen.record_rewrite 4155697 -38.9% 2540635 ± 2% iozone.131072KB_2048reclen.rewrite 3694537 ± 3% -27.3% 2684360 iozone.131072KB_2048reclen.write 462547 -18.3% 378043 iozone.131072KB_256reclen 10477031 ± 3% +6.4% 11143514 iozone.131072KB_256reclen.bkwd_read 10786442 ± 3% +6.3% 11466470 ± 2% iozone.131072KB_256reclen.fread 4422554 -38.9% 2703180 iozone.131072KB_256reclen.frewrite 4513907 -40.2% 2700056 iozone.131072KB_256reclen.fwrite 4691120 ± 2% -42.1% 2715491 iozone.131072KB_256reclen.random_write 21472934 -78.2% 4689219 iozone.131072KB_256reclen.record_rewrite 4025658 ± 3% -37.7% 2508850 iozone.131072KB_256reclen.rewrite 10425184 +3.6% 10798459 iozone.131072KB_256reclen.stride_read 3674918 ± 2% -30.0% 2572009 ± 4% iozone.131072KB_256reclen.write 362980 ± 2% -13.2% 315057 iozone.131072KB_4096reclen 8598261 ± 2% +4.7% 9002206 iozone.131072KB_4096reclen.bkwd_read 4080689 -36.7% 2581225 iozone.131072KB_4096reclen.frewrite 4124534 -37.0% 2596925 iozone.131072KB_4096reclen.fwrite 4761270 -40.8% 2816424 iozone.131072KB_4096reclen.random_write 9783775 -62.2% 3697554 iozone.131072KB_4096reclen.record_rewrite 4094406 -38.6% 2515909 iozone.131072KB_4096reclen.rewrite 3711599 -27.6% 2687856 iozone.131072KB_4096reclen.write 445354 -19.5% 358554 ± 2% iozone.131072KB_512reclen 4505758 -38.9% 2751413 iozone.131072KB_512reclen.frewrite 4533134 -39.3% 2752491 iozone.131072KB_512reclen.fwrite 4841713 -42.5% 2785239 ± 2% iozone.131072KB_512reclen.random_write 19357877 ± 2% -76.6% 4527349 iozone.131072KB_512reclen.record_rewrite 4255338 ± 2% -39.3% 2581578 iozone.131072KB_512reclen.rewrite 3917082 -30.0% 2741744 iozone.131072KB_512reclen.write 427530 -18.4% 348661 iozone.131072KB_64reclen 4120078 -36.6% 2612921 iozone.131072KB_64reclen.frewrite 4163104 -37.1% 2616671 iozone.131072KB_64reclen.fwrite 4342296 -40.3% 2593797 iozone.131072KB_64reclen.random_write 16675187 ± 2% -72.3% 4617489 iozone.131072KB_64reclen.record_rewrite 3862107 -35.1% 2508071 iozone.131072KB_64reclen.rewrite 3615562 -28.2% 2594525 iozone.131072KB_64reclen.write 369656 -13.8% 318628 iozone.131072KB_8192reclen 4084040 -35.8% 2621236 iozone.131072KB_8192reclen.frewrite 4171031 -36.3% 2657549 iozone.131072KB_8192reclen.fwrite 4751812 -40.9% 2808532 iozone.131072KB_8192reclen.random_write 9274324 -61.4% 3584092 iozone.131072KB_8192reclen.record_rewrite 4079969 -38.3% 2516161 ± 2% iozone.131072KB_8192reclen.rewrite 3662940 -27.4% 2658129 iozone.131072KB_8192reclen.write 523766 ± 3% -22.7% 404748 iozone.16384KB_1024reclen 6837159 ± 6% -49.8% 3432704 ± 3% iozone.16384KB_1024reclen.frewrite 6452432 ± 6% -49.4% 3264958 iozone.16384KB_1024reclen.fwrite 11712645 ± 2% -5.3% 11094955 ± 3% iozone.16384KB_1024reclen.random_read 10212039 -59.5% 4130773 iozone.16384KB_1024reclen.random_write 10644747 ± 2% -4.2% 10199361 iozone.16384KB_1024reclen.read 13233016 -69.6% 4019136 iozone.16384KB_1024reclen.record_rewrite 11476059 ± 3% -4.7% 10941165 ± 2% iozone.16384KB_1024reclen.reread 6769300 ± 10% -50.3% 3361173 iozone.16384KB_1024reclen.rewrite 5575719 ± 7% -40.2% 3332755 ± 2% iozone.16384KB_1024reclen.write 670808 ± 4% -25.8% 497581 iozone.16384KB_128reclen 15744853 ± 4% -7.3% 14588313 ± 4% iozone.16384KB_128reclen.fread 8575298 ± 6% -55.9% 3779439 ± 2% iozone.16384KB_128reclen.frewrite 8528342 ± 9% -55.0% 3838202 ± 2% iozone.16384KB_128reclen.fwrite 10657796 ± 3% -59.9% 4274345 iozone.16384KB_128reclen.random_write 14753478 ± 5% -7.1% 13710497 ± 3% iozone.16384KB_128reclen.read 19883590 ± 2% -76.4% 4687775 iozone.16384KB_128reclen.record_rewrite 6879699 ± 11% -50.0% 3438716 ± 2% iozone.16384KB_128reclen.rewrite 5693333 ± 8% -39.7% 3435110 ± 3% iozone.16384KB_128reclen.write 402948 ± 8% -25.0% 302066 ± 3% iozone.16384KB_16384reclen 5989603 ± 18% -48.4% 3089331 ± 7% iozone.16384KB_16384reclen.frewrite 5952726 ± 18% -51.1% 2909260 ± 3% iozone.16384KB_16384reclen.fwrite 10926335 -6.0% 10266058 iozone.16384KB_16384reclen.random_read 7865529 -53.7% 3641609 iozone.16384KB_16384reclen.random_write 7097218 ± 13% -54.3% 3243012 ± 5% iozone.16384KB_16384reclen.record_rewrite 4955000 ± 13% -43.3% 2809554 ± 3% iozone.16384KB_16384reclen.rewrite 3852320 ± 9% -33.1% 2575572 ± 2% iozone.16384KB_16384reclen.write 492780 ± 4% -15.7% 415240 ± 2% iozone.16384KB_16reclen 5747167 ± 5% -37.8% 3572140 ± 2% iozone.16384KB_16reclen.frewrite 5611391 ± 6% -38.2% 3466024 ± 3% iozone.16384KB_16reclen.fwrite 6074952 -40.8% 3598773 iozone.16384KB_16reclen.random_write 9187879 -52.5% 4365629 iozone.16384KB_16reclen.record_rewrite 5018736 ± 8% -37.5% 3135693 ± 2% iozone.16384KB_16reclen.rewrite 4501210 ± 10% -31.2% 3098882 ± 3% iozone.16384KB_16reclen.write 476039 ± 3% -20.2% 379667 iozone.16384KB_2048reclen 6201803 ± 10% -43.6% 3500786 ± 2% iozone.16384KB_2048reclen.frewrite 5898758 ± 9% -45.2% 3230000 ± 2% iozone.16384KB_2048reclen.fwrite 8666918 -55.7% 3842024 ± 2% iozone.16384KB_2048reclen.random_write 10076118 -63.3% 3695523 iozone.16384KB_2048reclen.record_rewrite 11218308 ± 3% -4.8% 10684627 ± 3% iozone.16384KB_2048reclen.reread 6119133 ± 10% -48.4% 3156270 ± 3% iozone.16384KB_2048reclen.rewrite 5152680 ± 10% -37.9% 3197545 ± 3% iozone.16384KB_2048reclen.write 683080 ± 5% -27.1% 497924 ± 3% iozone.16384KB_256reclen 16140658 ± 4% -8.2% 14818303 ± 5% iozone.16384KB_256reclen.freread 8337309 ± 12% -55.9% 3675422 ± 6% iozone.16384KB_256reclen.frewrite 8623447 ± 12% -57.0% 3709426 ± 5% iozone.16384KB_256reclen.fwrite 11159490 ± 2% -61.4% 4306677 ± 3% iozone.16384KB_256reclen.random_write 14760981 ± 4% -6.7% 13765221 ± 2% iozone.16384KB_256reclen.read 21831204 -78.4% 4713642 iozone.16384KB_256reclen.record_rewrite 7346093 ± 9% -53.7% 3403207 ± 4% iozone.16384KB_256reclen.rewrite 6109079 ± 8% -41.8% 3556551 ± 3% iozone.16384KB_256reclen.write 566054 ± 5% -19.9% 453202 ± 2% iozone.16384KB_32reclen 6697700 ± 10% -46.4% 3591587 ± 2% iozone.16384KB_32reclen.frewrite 6970026 ± 9% -48.2% 3609335 ± 4% iozone.16384KB_32reclen.fwrite 7956017 ± 2% -50.3% 3958068 iozone.16384KB_32reclen.random_write 12942212 ± 5% -66.0% 4406567 ± 4% iozone.16384KB_32reclen.record_rewrite 5921726 ± 11% -45.9% 3201790 ± 3% iozone.16384KB_32reclen.rewrite 5191971 ± 12% -37.6% 3237823 ± 4% iozone.16384KB_32reclen.write 460586 ± 5% -20.6% 365537 ± 2% iozone.16384KB_4096reclen 6335781 ± 15% -40.0% 3803409 ± 5% iozone.16384KB_4096reclen.frewrite 5870430 ± 13% -41.6% 3428726 ± 2% iozone.16384KB_4096reclen.fwrite 8495162 -54.7% 3847451 ± 2% iozone.16384KB_4096reclen.random_write 9388265 ± 3% -61.5% 3615448 iozone.16384KB_4096reclen.record_rewrite 11077239 ± 3% -6.7% 10336092 ± 2% iozone.16384KB_4096reclen.reread 5871104 ± 12% -49.5% 2965535 iozone.16384KB_4096reclen.rewrite 4790750 ± 13% -37.9% 2972961 iozone.16384KB_4096reclen.write 9047972 ± 2% -3.4% 8738705 iozone.16384KB_4reclen.freread 6915186 ± 4% -4.3% 6614717 ± 2% iozone.16384KB_4reclen.random_read 3396707 +3.0% 3497129 iozone.16384KB_4reclen.record_rewrite 614723 ± 3% -27.4% 446233 ± 4% iozone.16384KB_512reclen 13914396 ± 4% -7.8% 12828695 ± 5% iozone.16384KB_512reclen.bkwd_read 8096910 ± 7% -54.1% 3714698 ± 4% iozone.16384KB_512reclen.frewrite 8101100 ± 8% -54.6% 3676473 iozone.16384KB_512reclen.fwrite 11355901 ± 3% -61.9% 4330173 ± 2% iozone.16384KB_512reclen.random_write 12460175 ± 4% -7.6% 11507388 ± 4% iozone.16384KB_512reclen.read 19238622 ± 4% -76.4% 4542726 iozone.16384KB_512reclen.record_rewrite 7323816 ± 12% -53.2% 3425389 iozone.16384KB_512reclen.rewrite 13429700 ± 4% -8.2% 12323787 ± 4% iozone.16384KB_512reclen.stride_read 6207547 ± 11% -42.5% 3572174 ± 3% iozone.16384KB_512reclen.write 624341 ± 4% -23.2% 479567 iozone.16384KB_64reclen 15151736 ± 4% -8.6% 13854885 ± 4% iozone.16384KB_64reclen.bkwd_read 7323657 ± 8% -48.8% 3746646 ± 2% iozone.16384KB_64reclen.frewrite 7790658 ± 7% -52.3% 3719161 ± 3% iozone.16384KB_64reclen.fwrite 9510948 ± 2% -55.8% 4207249 iozone.16384KB_64reclen.random_write 16906757 -72.5% 4652294 iozone.16384KB_64reclen.record_rewrite 6631166 ± 9% -50.1% 3311344 ± 3% iozone.16384KB_64reclen.rewrite 5573825 ± 10% -39.7% 3361066 ± 4% iozone.16384KB_64reclen.write 433143 ± 7% -21.4% 340305 ± 3% iozone.16384KB_8192reclen 7362577 ± 9% -40.0% 4417899 ± 5% iozone.16384KB_8192reclen.frewrite 5392604 ± 2% -31.0% 3719420 ± 6% iozone.16384KB_8192reclen.fwrite 8344361 ± 3% -53.9% 3843290 iozone.16384KB_8192reclen.random_write 8531288 ± 10% -59.7% 3440601 ± 4% iozone.16384KB_8192reclen.record_rewrite 5582200 ± 14% -48.4% 2880844 ± 2% iozone.16384KB_8192reclen.rewrite 11218798 ± 2% -11.7% 9903546 ± 8% iozone.16384KB_8192reclen.stride_read 4609004 ± 13% -40.2% 2756259 iozone.16384KB_8192reclen.write 406592 ± 5% -9.1% 369612 iozone.16384KB_8reclen 4483118 ± 4% -24.4% 3388493 ± 2% iozone.16384KB_8reclen.frewrite 4294129 ± 8% -24.4% 3248404 ± 2% iozone.16384KB_8reclen.fwrite 4177378 ± 2% -24.7% 3147515 iozone.16384KB_8reclen.random_write 6115193 -32.6% 4124662 iozone.16384KB_8reclen.record_rewrite 4044126 ± 7% -24.7% 3046498 ± 3% iozone.16384KB_8reclen.rewrite 3777195 ± 9% -22.3% 2935122 ± 4% iozone.16384KB_8reclen.write 546618 -19.5% 439945 iozone.2048KB_1024reclen 12660025 -46.8% 6732798 ± 2% iozone.2048KB_1024reclen.frewrite 6005037 ± 4% -29.6% 4228146 ± 4% iozone.2048KB_1024reclen.fwrite 9615106 ± 4% -56.3% 4204222 iozone.2048KB_1024reclen.random_write 10922139 ± 2% -63.3% 4012164 ± 6% iozone.2048KB_1024reclen.record_rewrite 7433654 ± 2% -51.5% 3602167 iozone.2048KB_1024reclen.rewrite 6398008 ± 4% -39.9% 3847742 ± 5% iozone.2048KB_1024reclen.write 774331 ± 2% -19.1% 626077 iozone.2048KB_128reclen 9339282 ± 3% -54.7% 4235217 ± 7% iozone.2048KB_128reclen.frewrite 9861836 -55.1% 4432068 iozone.2048KB_128reclen.fwrite 11255098 ± 3% -61.0% 4393415 ± 5% iozone.2048KB_128reclen.random_write 19154136 -75.7% 4660792 iozone.2048KB_128reclen.record_rewrite 7915314 ± 3% -52.0% 3797347 iozone.2048KB_128reclen.rewrite 6736213 ± 7% -39.0% 4106970 ± 6% iozone.2048KB_128reclen.write 540333 -12.0% 475243 ± 2% iozone.2048KB_16reclen 6117335 -37.0% 3853879 iozone.2048KB_16reclen.frewrite 6170729 ± 3% -36.7% 3906222 iozone.2048KB_16reclen.fwrite 6457065 ± 2% -39.3% 3920286 ± 2% iozone.2048KB_16reclen.random_write 8925801 -52.3% 4258996 iozone.2048KB_16reclen.record_rewrite 5634792 ± 2% -36.8% 3559899 ± 3% iozone.2048KB_16reclen.rewrite 5116892 ± 8% -27.1% 3732619 ± 4% iozone.2048KB_16reclen.write 487898 -17.8% 401052 iozone.2048KB_2048reclen 8131189 -53.7% 3766691 ± 2% iozone.2048KB_2048reclen.frewrite 8051272 ± 8% -52.1% 3853722 ± 2% iozone.2048KB_2048reclen.fwrite 8324425 ± 2% -53.1% 3907865 ± 3% iozone.2048KB_2048reclen.random_write 8403246 -54.1% 3853043 ± 3% iozone.2048KB_2048reclen.record_rewrite 6448049 ± 7% -46.7% 3436943 iozone.2048KB_2048reclen.rewrite 4736760 ± 10% -33.6% 3147117 iozone.2048KB_2048reclen.write 787613 ± 3% -20.5% 626349 iozone.2048KB_256reclen 10263264 ± 3% -54.7% 4646604 iozone.2048KB_256reclen.frewrite 10179784 ± 3% -54.3% 4657053 iozone.2048KB_256reclen.fwrite 11645748 ± 7% -61.9% 4442609 ± 5% iozone.2048KB_256reclen.random_write 19996981 ± 3% -76.9% 4610956 ± 4% iozone.2048KB_256reclen.record_rewrite 7744388 ± 9% -50.5% 3835087 iozone.2048KB_256reclen.rewrite 7117349 ± 4% -41.4% 4169140 ± 3% iozone.2048KB_256reclen.write 617275 ± 2% -15.9% 519296 iozone.2048KB_32reclen 7401019 ± 3% -45.4% 4037639 iozone.2048KB_32reclen.frewrite 7719491 ± 2% -46.9% 4097741 iozone.2048KB_32reclen.fwrite 8633317 ± 3% -51.1% 4221529 ± 2% iozone.2048KB_32reclen.random_write 11765911 ± 14% -62.2% 4441885 iozone.2048KB_32reclen.record_rewrite 6743151 ± 2% -44.1% 3772064 ± 2% iozone.2048KB_32reclen.rewrite 6067717 ± 6% -33.3% 4045820 ± 3% iozone.2048KB_32reclen.write 686319 ± 2% -20.3% 547002 ± 2% iozone.2048KB_512reclen 10258408 ± 4% -51.1% 5013013 ± 3% iozone.2048KB_512reclen.frewrite 9201658 ± 14% -46.4% 4934039 ± 7% iozone.2048KB_512reclen.fwrite 11811913 ± 5% -61.4% 4556856 iozone.2048KB_512reclen.random_write 16741303 ± 3% -73.0% 4512235 iozone.2048KB_512reclen.record_rewrite 8076937 ± 5% -52.5% 3832601 iozone.2048KB_512reclen.rewrite 6402629 ± 11% -37.7% 3990424 ± 4% iozone.2048KB_512reclen.write 686438 ± 2% -19.3% 553707 iozone.2048KB_64reclen 8426729 ± 8% -50.2% 4196218 iozone.2048KB_64reclen.frewrite 8949585 ± 2% -52.3% 4271865 iozone.2048KB_64reclen.fwrite 10476756 ± 2% -59.1% 4284777 ± 7% iozone.2048KB_64reclen.random_write 16339660 ± 2% -72.4% 4512540 iozone.2048KB_64reclen.record_rewrite 7299616 ± 6% -48.1% 3786234 iozone.2048KB_64reclen.rewrite 6425014 ± 13% -35.1% 4172482 ± 2% iozone.2048KB_64reclen.write 446265 ± 2% -7.2% 414117 ± 2% iozone.2048KB_8reclen 4600877 ± 3% -21.7% 3602700 iozone.2048KB_8reclen.frewrite 4696867 ± 4% -24.1% 3563359 ± 5% iozone.2048KB_8reclen.fwrite 4575834 -25.8% 3396893 ± 3% iozone.2048KB_8reclen.random_write 5909456 ± 6% -30.9% 4084327 iozone.2048KB_8reclen.record_rewrite 4163296 ± 8% -17.9% 3419822 iozone.2048KB_8reclen.rewrite 4315228 ± 3% -17.8% 3545590 ± 2% iozone.2048KB_8reclen.write 876883 -12.7% 765305 ± 2% iozone.256KB_128reclen 12782503 ± 3% -45.0% 7025945 iozone.256KB_128reclen.frewrite 5741338 ± 2% -33.1% 3842429 ± 15% iozone.256KB_128reclen.fwrite 12766790 ± 2% -62.6% 4776665 ± 3% iozone.256KB_128reclen.random_write 14002687 -67.8% 4512965 ± 5% iozone.256KB_128reclen.record_rewrite 7065110 ± 13% -50.3% 3507880 ± 14% iozone.256KB_128reclen.rewrite 5930962 ± 7% -32.3% 4015437 iozone.256KB_128reclen.write 642307 ± 2% -9.2% 583516 ± 3% iozone.256KB_16reclen 6074746 ± 2% -37.6% 3792774 ± 6% iozone.256KB_16reclen.frewrite 6105783 -41.2% 3591341 ± 20% iozone.256KB_16reclen.fwrite 6873747 ± 4% -41.7% 4006649 ± 4% iozone.256KB_16reclen.random_write 7981703 ± 7% -48.4% 4120145 iozone.256KB_16reclen.record_rewrite 5440790 -34.9% 3540479 iozone.256KB_16reclen.rewrite 4945496 ± 5% -25.8% 3668556 ± 4% iozone.256KB_16reclen.write 936922 -12.7% 817874 iozone.256KB_256reclen 9160325 ± 13% -53.8% 4230113 ± 4% iozone.256KB_256reclen.frewrite 10080319 ± 8% -56.3% 4405546 iozone.256KB_256reclen.fwrite 13506820 ± 9% -65.9% 4601257 ± 15% iozone.256KB_256reclen.random_write 13415163 -65.9% 4570189 ± 10% iozone.256KB_256reclen.record_rewrite 6785904 ± 16% -45.7% 3687027 ± 4% iozone.256KB_256reclen.rewrite 6143300 ± 8% -42.8% 3513204 ± 9% iozone.256KB_256reclen.write 731396 ± 4% -9.5% 661916 iozone.256KB_32reclen 7356434 ± 6% -42.7% 4215021 ± 4% iozone.256KB_32reclen.frewrite 7645775 ± 2% -43.3% 4336420 ± 4% iozone.256KB_32reclen.fwrite 9336883 -51.9% 4486681 iozone.256KB_32reclen.random_write 10992498 -61.6% 4219066 ± 4% iozone.256KB_32reclen.record_rewrite 6343748 ± 3% -44.5% 3519118 ± 4% iozone.256KB_32reclen.rewrite 5653159 ± 3% -33.4% 3767542 ± 7% iozone.256KB_32reclen.write 9842890 +3.0% 10135309 iozone.256KB_4reclen.fread 3091569 +3.9% 3211087 iozone.256KB_4reclen.frewrite 819494 -12.5% 716765 ± 3% iozone.256KB_64reclen 9479809 ± 2% -48.1% 4915296 ± 4% iozone.256KB_64reclen.frewrite 9443174 -47.2% 4989437 iozone.256KB_64reclen.fwrite 10982966 ± 9% -60.0% 4396044 ± 16% iozone.256KB_64reclen.random_write 13120773 ± 2% -66.2% 4430361 iozone.256KB_64reclen.record_rewrite 7022881 -47.4% 3691036 ± 4% iozone.256KB_64reclen.rewrite 5811449 ± 10% -32.1% 3946590 ± 4% iozone.256KB_64reclen.write 505316 -6.0% 474879 ± 3% iozone.256KB_8reclen 4604603 ± 3% -22.0% 3592664 ± 3% iozone.256KB_8reclen.frewrite 4723759 ± 4% -20.5% 3757181 iozone.256KB_8reclen.fwrite 4880843 -25.9% 3614503 ± 3% iozone.256KB_8reclen.random_write 5720852 -31.3% 3930088 iozone.256KB_8reclen.record_rewrite 4171724 ± 3% -27.0% 3045157 ± 19% iozone.256KB_8reclen.rewrite 384269 -18.7% 312569 ± 3% iozone.262144KB_1024reclen 4228130 -38.5% 2601765 iozone.262144KB_1024reclen.frewrite 4245661 -38.6% 2605001 iozone.262144KB_1024reclen.fwrite 4764166 -43.3% 2700353 ± 7% iozone.262144KB_1024reclen.random_write 13022842 -71.4% 3718118 ± 9% iozone.262144KB_1024reclen.record_rewrite 4224765 -38.4% 2603504 iozone.262144KB_1024reclen.rewrite 3762221 -30.8% 2604280 ± 8% iozone.262144KB_1024reclen.write 444657 -19.4% 358268 iozone.262144KB_128reclen 4257822 -38.7% 2611195 iozone.262144KB_128reclen.frewrite 4256653 -38.4% 2620727 iozone.262144KB_128reclen.fwrite 4442435 -41.8% 2585358 iozone.262144KB_128reclen.random_write 19508218 -76.2% 4635032 iozone.262144KB_128reclen.record_rewrite 4027292 -38.4% 2482551 iozone.262144KB_128reclen.rewrite 3685432 -31.3% 2531930 ± 5% iozone.262144KB_128reclen.write 350335 -12.9% 305213 iozone.262144KB_16384reclen 3306788 -31.6% 2262244 iozone.262144KB_16384reclen.frewrite 3400413 -34.4% 2230709 ± 5% iozone.262144KB_16384reclen.fwrite 4625060 -39.8% 2783094 iozone.262144KB_16384reclen.random_write 7521068 ± 14% -57.6% 3192318 ± 5% iozone.262144KB_16384reclen.record_rewrite 4086952 -39.4% 2477683 iozone.262144KB_16384reclen.rewrite 3595399 -30.1% 2513733 ± 11% iozone.262144KB_16384reclen.write 359063 ± 4% -13.1% 311921 iozone.262144KB_2048reclen 3920404 ± 8% -35.4% 2531203 iozone.262144KB_2048reclen.frewrite 3927967 ± 9% -35.2% 2544352 iozone.262144KB_2048reclen.fwrite 4645669 ± 2% -40.2% 2777700 iozone.262144KB_2048reclen.random_write 10198908 -63.7% 3697244 iozone.262144KB_2048reclen.record_rewrite 4147484 -38.1% 2567342 iozone.262144KB_2048reclen.rewrite 3710679 ± 2% -28.2% 2662870 iozone.262144KB_2048reclen.write 463955 -20.6% 368213 iozone.262144KB_256reclen 10373960 ± 5% +5.0% 10890873 iozone.262144KB_256reclen.bkwd_read 4479411 -40.2% 2680473 iozone.262144KB_256reclen.frewrite 4457060 -39.9% 2679874 iozone.262144KB_256reclen.fwrite 4606982 -42.4% 2655255 iozone.262144KB_256reclen.random_write 21281948 -78.1% 4651245 iozone.262144KB_256reclen.record_rewrite 4131652 -39.6% 2494448 ± 2% iozone.262144KB_256reclen.rewrite 3745982 -30.3% 2610616 iozone.262144KB_256reclen.write 363030 -13.7% 313142 iozone.262144KB_4096reclen 4077622 -37.6% 2545637 iozone.262144KB_4096reclen.frewrite 4097419 -37.5% 2560139 iozone.262144KB_4096reclen.fwrite 4667585 ± 2% -39.9% 2803072 iozone.262144KB_4096reclen.random_write 9839826 -62.5% 3694499 iozone.262144KB_4096reclen.record_rewrite 4124679 -38.3% 2543895 iozone.262144KB_4096reclen.rewrite 3629825 ± 3% -26.5% 2666858 iozone.262144KB_4096reclen.write 447934 -20.2% 357320 iozone.262144KB_512reclen 4535922 -40.0% 2722081 iozone.262144KB_512reclen.frewrite 4549499 -39.9% 2732292 iozone.262144KB_512reclen.fwrite 4748840 -41.8% 2764377 iozone.262144KB_512reclen.random_write 19397355 ± 2% -76.8% 4508272 iozone.262144KB_512reclen.record_rewrite 4267200 ± 2% -40.2% 2552813 iozone.262144KB_512reclen.rewrite 3885152 ± 5% -31.3% 2670734 ± 5% iozone.262144KB_512reclen.write 424456 -18.3% 346877 iozone.262144KB_64reclen 10154974 ± 3% +4.1% 10568230 iozone.262144KB_64reclen.fread 4094335 -36.6% 2596063 iozone.262144KB_64reclen.frewrite 4122313 -37.1% 2590914 iozone.262144KB_64reclen.fwrite 4173511 -40.4% 2488944 iozone.262144KB_64reclen.random_write 16968397 -72.9% 4604559 iozone.262144KB_64reclen.record_rewrite 3911540 -36.7% 2476357 iozone.262144KB_64reclen.rewrite 3540605 ± 2% -28.8% 2522326 ± 5% iozone.262144KB_64reclen.write 363270 -14.1% 312070 iozone.262144KB_8192reclen 4072504 -36.9% 2569494 iozone.262144KB_8192reclen.frewrite 4127105 -37.6% 2577055 iozone.262144KB_8192reclen.fwrite 4684117 -40.3% 2795599 iozone.262144KB_8192reclen.random_write 9668475 -62.9% 3591337 ± 4% iozone.262144KB_8192reclen.record_rewrite 4149213 -38.8% 2540318 ± 2% iozone.262144KB_8192reclen.rewrite 3626868 ± 4% -26.8% 2656000 iozone.262144KB_8192reclen.write 452361 ± 6% -23.5% 346179 ± 3% iozone.32768KB_1024reclen 10954271 ± 5% -7.6% 10121060 ± 7% iozone.32768KB_1024reclen.fread 5449792 ± 13% -45.9% 2950655 ± 6% iozone.32768KB_1024reclen.frewrite 5406442 ± 14% -47.2% 2853976 ± 4% iozone.32768KB_1024reclen.fwrite 8077369 ± 7% -55.7% 3581207 ± 3% iozone.32768KB_1024reclen.random_write 13107006 -69.8% 3962878 iozone.32768KB_1024reclen.record_rewrite 5297933 ± 13% -44.4% 2944868 ± 5% iozone.32768KB_1024reclen.rewrite 4381643 ± 17% -34.6% 2863550 ± 4% iozone.32768KB_1024reclen.write 540696 ± 10% -24.6% 407737 iozone.32768KB_128reclen 13364204 ± 8% -11.1% 11887041 ± 7% iozone.32768KB_128reclen.freread 5879763 ± 19% -48.6% 3021490 ± 4% iozone.32768KB_128reclen.frewrite 5784176 ± 26% -49.4% 2926630 ± 5% iozone.32768KB_128reclen.fwrite 7645945 ± 13% -53.4% 3566359 ± 4% iozone.32768KB_128reclen.random_write 19380762 ± 4% -76.1% 4637415 iozone.32768KB_128reclen.record_rewrite 5152463 ± 15% -46.5% 2756253 ± 4% iozone.32768KB_128reclen.rewrite 4778959 ± 12% -42.6% 2743941 ± 2% iozone.32768KB_128reclen.write 355402 ± 6% -18.6% 289426 ± 5% iozone.32768KB_16384reclen 5065660 ± 7% -27.4% 3678717 ± 3% iozone.32768KB_16384reclen.frewrite 4502475 ± 5% -22.7% 3479293 ± 3% iozone.32768KB_16384reclen.fwrite 5977933 ± 2% -48.3% 3091112 ± 8% iozone.32768KB_16384reclen.random_write 6161792 ± 3% -51.7% 2974276 ± 4% iozone.32768KB_16384reclen.record_rewrite 4532246 ± 3% -42.5% 2606120 ± 3% iozone.32768KB_16384reclen.rewrite 3764245 ± 11% -29.5% 2653857 ± 4% iozone.32768KB_16384reclen.write 434720 ± 5% -20.8% 344426 ± 3% iozone.32768KB_2048reclen 5241635 ± 11% -45.6% 2851437 ± 2% iozone.32768KB_2048reclen.frewrite 4750629 ± 13% -43.2% 2699454 ± 5% iozone.32768KB_2048reclen.fwrite 7484649 ± 5% -55.5% 3327521 ± 8% iozone.32768KB_2048reclen.random_write 9823060 -62.6% 3673651 iozone.32768KB_2048reclen.record_rewrite 5226760 ± 13% -45.0% 2872670 ± 4% iozone.32768KB_2048reclen.rewrite 4208492 ± 13% -33.9% 2781504 ± 2% iozone.32768KB_2048reclen.write 561829 ± 9% -25.6% 417889 ± 2% iozone.32768KB_256reclen 6860768 ± 11% -53.2% 3208544 ± 7% iozone.32768KB_256reclen.frewrite 6098671 ± 27% -50.5% 3020109 ± 6% iozone.32768KB_256reclen.fwrite 8463832 ± 8% -56.5% 3682172 ± 3% iozone.32768KB_256reclen.random_write 21467650 -78.2% 4679967 iozone.32768KB_256reclen.record_rewrite 5273214 ± 13% -47.3% 2778932 ± 7% iozone.32768KB_256reclen.rewrite 4373441 ± 13% -35.2% 2832910 ± 7% iozone.32768KB_256reclen.write 414838 ± 7% -15.6% 350194 ± 4% iozone.32768KB_4096reclen 5398092 ± 6% -44.2% 3011772 ± 6% iozone.32768KB_4096reclen.frewrite 4815155 ± 10% -38.3% 2971343 ± 5% iozone.32768KB_4096reclen.fwrite 7050252 ± 8% -50.8% 3465523 ± 3% iozone.32768KB_4096reclen.random_write 9399112 ± 3% -60.9% 3672116 iozone.32768KB_4096reclen.record_rewrite 5116695 ± 9% -44.6% 2835183 ± 4% iozone.32768KB_4096reclen.rewrite 4077496 ± 11% -31.7% 2786662 ± 3% iozone.32768KB_4096reclen.write 537403 ± 7% -26.9% 392679 ± 2% iozone.32768KB_512reclen 6382722 ± 14% -53.0% 2999010 ± 5% iozone.32768KB_512reclen.frewrite 6043775 ± 20% -50.8% 2975689 ± 5% iozone.32768KB_512reclen.fwrite 8431834 ± 9% -55.9% 3715052 ± 3% iozone.32768KB_512reclen.random_write 19350771 -76.7% 4499910 iozone.32768KB_512reclen.record_rewrite 5673691 ± 15% -49.6% 2860172 ± 3% iozone.32768KB_512reclen.rewrite 4695280 ± 17% -39.0% 2862002 ± 2% iozone.32768KB_512reclen.write 516609 ± 8% -23.8% 393799 ± 2% iozone.32768KB_64reclen 13166484 ± 5% -12.2% 11562108 ± 8% iozone.32768KB_64reclen.bkwd_read 5103586 ± 19% -46.5% 2727942 ± 3% iozone.32768KB_64reclen.frewrite 5235240 ± 23% -46.5% 2801394 ± 3% iozone.32768KB_64reclen.fwrite 7279781 ± 6% -50.6% 3592676 ± 3% iozone.32768KB_64reclen.random_write 16991347 -72.9% 4607452 iozone.32768KB_64reclen.record_rewrite 4910826 ± 14% -43.0% 2799150 ± 6% iozone.32768KB_64reclen.rewrite 4188458 ± 6% -35.2% 2715386 ± 3% iozone.32768KB_64reclen.write 399134 ± 6% -16.3% 334017 ± 3% iozone.32768KB_8192reclen 4890220 ± 10% -36.2% 3118086 ± 6% iozone.32768KB_8192reclen.frewrite 5198365 ± 5% -36.9% 3281056 iozone.32768KB_8192reclen.fwrite 6937688 ± 5% -50.9% 3404642 ± 2% iozone.32768KB_8192reclen.random_write 8411000 ± 5% -58.4% 3497183 iozone.32768KB_8192reclen.record_rewrite 4886181 ± 10% -40.6% 2901408 ± 2% iozone.32768KB_8192reclen.rewrite 4060328 ± 14% -29.3% 2869880 ± 6% iozone.32768KB_8192reclen.write 547507 -21.3% 431106 iozone.4096KB_1024reclen 8803122 -47.6% 4608902 iozone.4096KB_1024reclen.frewrite 8190984 ± 2% -45.8% 4436387 iozone.4096KB_1024reclen.fwrite 10046329 -58.1% 4210980 ± 3% iozone.4096KB_1024reclen.random_write 12133980 -66.9% 4019665 iozone.4096KB_1024reclen.record_rewrite 7585382 ± 2% -51.9% 3651453 iozone.4096KB_1024reclen.rewrite 6590193 ± 2% -42.1% 3817964 ± 4% iozone.4096KB_1024reclen.write 722013 ± 2% -23.0% 556038 iozone.4096KB_128reclen 9524794 -55.3% 4258037 ± 2% iozone.4096KB_128reclen.frewrite 9592753 -55.8% 4241299 ± 2% iozone.4096KB_128reclen.fwrite 11349709 -60.6% 4473598 iozone.4096KB_128reclen.random_write 19159156 ± 2% -75.8% 4638607 iozone.4096KB_128reclen.record_rewrite 8146349 -53.5% 3789449 ± 3% iozone.4096KB_128reclen.rewrite 7034730 ± 3% -43.2% 3994649 ± 7% iozone.4096KB_128reclen.write 531712 -12.5% 465267 iozone.4096KB_16reclen 6137175 -37.2% 3852128 iozone.4096KB_16reclen.frewrite 6226631 ± 2% -37.0% 3921424 iozone.4096KB_16reclen.fwrite 6427825 -40.2% 3841270 iozone.4096KB_16reclen.random_write 9153123 -52.9% 4310771 iozone.4096KB_16reclen.record_rewrite 5642240 ± 2% -36.1% 3606201 iozone.4096KB_16reclen.rewrite 4733088 ± 10% -26.9% 3461604 ± 7% iozone.4096KB_16reclen.write 498194 -17.3% 411858 iozone.4096KB_2048reclen 10061771 -40.7% 5967435 iozone.4096KB_2048reclen.frewrite 5695122 ± 3% -29.8% 3999587 ± 2% iozone.4096KB_2048reclen.fwrite 8538957 -52.9% 4021716 iozone.4096KB_2048reclen.random_write 9154121 -57.9% 3852260 iozone.4096KB_2048reclen.record_rewrite 6784175 -48.7% 3477279 iozone.4096KB_2048reclen.rewrite 5730945 ± 4% -37.5% 3583348 ± 4% iozone.4096KB_2048reclen.write 799652 -22.1% 622935 iozone.4096KB_256reclen 10182498 -56.7% 4413478 iozone.4096KB_256reclen.frewrite 10079537 ± 2% -56.4% 4398351 iozone.4096KB_256reclen.fwrite 11431595 ± 5% -60.7% 4489528 iozone.4096KB_256reclen.random_write 21136142 -77.9% 4668119 iozone.4096KB_256reclen.record_rewrite 8432884 ± 2% -54.4% 3841577 iozone.4096KB_256reclen.rewrite 7143188 ± 3% -41.3% 4190914 iozone.4096KB_256reclen.write 622082 -18.0% 509974 iozone.4096KB_32reclen 7573420 ± 2% -47.2% 3997267 iozone.4096KB_32reclen.frewrite 7723292 -47.7% 4040106 ± 2% iozone.4096KB_32reclen.fwrite 8332826 -51.0% 4080432 ± 3% iozone.4096KB_32reclen.random_write 13037221 -65.6% 4482760 iozone.4096KB_32reclen.record_rewrite 6853083 ± 2% -45.0% 3767795 iozone.4096KB_32reclen.rewrite 6176004 ± 3% -34.5% 4044866 ± 2% iozone.4096KB_32reclen.write 500859 -18.8% 406662 iozone.4096KB_4096reclen 8390312 -54.4% 3825195 ± 3% iozone.4096KB_4096reclen.frewrite 8363283 -53.3% 3901735 iozone.4096KB_4096reclen.fwrite 8389951 ± 4% -52.1% 4022578 iozone.4096KB_4096reclen.random_write 8597277 -53.3% 4017127 iozone.4096KB_4096reclen.record_rewrite 6710892 -48.8% 3438657 iozone.4096KB_4096reclen.rewrite 4836366 ± 3% -33.0% 3238538 iozone.4096KB_4096reclen.write 7445582 ± 2% -4.1% 7142068 ± 2% iozone.4096KB_4reclen.stride_read 703788 ± 2% -23.3% 539608 ± 2% iozone.4096KB_512reclen 9674357 ± 2% -54.1% 4444669 iozone.4096KB_512reclen.frewrite 9274029 -52.7% 4384389 iozone.4096KB_512reclen.fwrite 12050340 -62.6% 4509701 iozone.4096KB_512reclen.random_write 18073626 -75.1% 4502289 iozone.4096KB_512reclen.record_rewrite 8382898 ± 2% -53.8% 3874107 iozone.4096KB_512reclen.rewrite 7020098 ± 8% -40.0% 4213203 iozone.4096KB_512reclen.write 680911 -20.5% 541063 iozone.4096KB_64reclen 8715570 ± 2% -52.1% 4171282 iozone.4096KB_64reclen.frewrite 8859582 ± 2% -53.2% 4142478 ± 4% iozone.4096KB_64reclen.fwrite 10038380 ± 2% -56.8% 4331688 iozone.4096KB_64reclen.random_write 15765586 -2.9% 15313032 iozone.4096KB_64reclen.read 16626317 -72.4% 4584815 iozone.4096KB_64reclen.record_rewrite 7572169 ± 3% -49.2% 3848094 iozone.4096KB_64reclen.rewrite 6403648 ± 9% -38.2% 3959666 ± 5% iozone.4096KB_64reclen.write 425985 ± 3% -6.5% 398362 iozone.4096KB_8reclen 4504277 ± 4% -22.2% 3504237 iozone.4096KB_8reclen.frewrite 4593663 ± 3% -22.4% 3564791 ± 2% iozone.4096KB_8reclen.fwrite 10555094 -3.3% 10208177 iozone.4096KB_8reclen.random_read 4370705 ± 2% -26.3% 3220631 iozone.4096KB_8reclen.random_write 5963939 ± 2% -33.1% 3989125 ± 2% iozone.4096KB_8reclen.record_rewrite 4209124 ± 3% -21.5% 3303798 iozone.4096KB_8reclen.rewrite 852407 ± 3% -16.0% 715694 ± 2% iozone.512KB_128reclen 10177118 ± 5% -50.2% 5068071 ± 4% iozone.512KB_128reclen.frewrite 10282951 ± 3% -50.3% 5106983 ± 3% iozone.512KB_128reclen.fwrite 12595570 ± 15% -61.4% 4865755 ± 2% iozone.512KB_128reclen.random_write 16296842 -72.9% 4417265 ± 8% iozone.512KB_128reclen.record_rewrite 7757871 ± 3% -51.1% 3794609 ± 2% iozone.512KB_128reclen.rewrite 6638722 ± 3% -38.9% 4057507 ± 3% iozone.512KB_128reclen.write 595458 -9.2% 540559 iozone.512KB_16reclen 5956064 ± 3% -34.5% 3903203 iozone.512KB_16reclen.frewrite 6272496 ± 2% -37.0% 3949192 ± 2% iozone.512KB_16reclen.fwrite 7236243 -43.7% 4075432 ± 3% iozone.512KB_16reclen.random_write 8719765 -51.8% 4201307 ± 2% iozone.512KB_16reclen.record_rewrite 5446223 ± 2% -34.1% 3588778 ± 2% iozone.512KB_16reclen.rewrite 5142682 ± 5% -26.0% 3804311 ± 3% iozone.512KB_16reclen.write 849114 ± 2% -15.0% 721716 ± 3% iozone.512KB_256reclen 12957952 ± 4% -46.2% 6969607 ± 2% iozone.512KB_256reclen.frewrite 5522956 ± 8% -25.6% 4110667 ± 5% iozone.512KB_256reclen.fwrite 14017494 -65.6% 4822324 ± 6% iozone.512KB_256reclen.random_write 16381271 -71.5% 4674505 ± 4% iozone.512KB_256reclen.record_rewrite 7501543 ± 4% -50.6% 3703905 ± 5% iozone.512KB_256reclen.rewrite 6216048 ± 13% -36.3% 3958710 ± 11% iozone.512KB_256reclen.write 719626 ± 2% -11.8% 634484 iozone.512KB_32reclen 7478304 ± 5% -44.2% 4170717 iozone.512KB_32reclen.frewrite 7753337 -45.1% 4258997 iozone.512KB_32reclen.fwrite 9722852 -53.8% 4495981 ± 3% iozone.512KB_32reclen.random_write 11873100 ± 3% -63.3% 4351978 ± 2% iozone.512KB_32reclen.record_rewrite 6544030 ± 5% -42.7% 3747946 iozone.512KB_32reclen.rewrite 5826301 ± 6% -31.0% 4019454 ± 2% iozone.512KB_32reclen.write 741696 ± 2% -15.5% 626927 ± 4% iozone.512KB_512reclen 9528590 ± 18% -55.5% 4237034 ± 4% iozone.512KB_512reclen.frewrite 10150088 ± 18% -57.3% 4333989 ± 4% iozone.512KB_512reclen.fwrite 12817906 ± 5% -64.2% 4585174 ± 7% iozone.512KB_512reclen.random_write 11254899 ± 23% -58.1% 4712207 ± 3% iozone.512KB_512reclen.record_rewrite 7774338 ± 5% -53.4% 3624363 ± 9% iozone.512KB_512reclen.rewrite 6771886 ± 2% -41.1% 3986479 ± 4% iozone.512KB_512reclen.write 800056 -13.7% 690201 ± 2% iozone.512KB_64reclen 8943767 ± 2% -49.5% 4519888 ± 2% iozone.512KB_64reclen.frewrite 9113029 ± 2% -49.3% 4618343 iozone.512KB_64reclen.fwrite 11727579 ± 4% -59.9% 4707398 ± 4% iozone.512KB_64reclen.random_write 14262817 ± 7% -69.3% 4379665 ± 3% iozone.512KB_64reclen.record_rewrite 7189400 ± 2% -48.1% 3727859 ± 2% iozone.512KB_64reclen.rewrite 6324167 ± 3% -35.8% 4057263 ± 3% iozone.512KB_64reclen.write 478105 -4.9% 454663 ± 2% iozone.512KB_8reclen 4484121 ± 8% -21.3% 3529343 ± 2% iozone.512KB_8reclen.frewrite 4734724 ± 2% -22.5% 3667327 ± 2% iozone.512KB_8reclen.fwrite 4285637 ± 3% -21.7% 3354676 ± 3% iozone.512KB_8reclen.rewrite 4167376 ± 7% -16.1% 3497431 ± 4% iozone.512KB_8reclen.write 380792 -16.9% 316489 iozone.524288KB_1024reclen 4182707 -38.2% 2584442 iozone.524288KB_1024reclen.frewrite 4208045 -38.5% 2586615 iozone.524288KB_1024reclen.fwrite 4746818 -41.9% 2756626 iozone.524288KB_1024reclen.random_write 12948563 -69.8% 3914308 iozone.524288KB_1024reclen.record_rewrite 4186499 -38.2% 2588662 iozone.524288KB_1024reclen.rewrite 3707293 -27.7% 2680239 iozone.524288KB_1024reclen.write 431843 ± 4% -17.4% 356596 iozone.524288KB_128reclen 4069767 ± 9% -36.4% 2588593 iozone.524288KB_128reclen.frewrite 4079706 ± 9% -36.0% 2611388 iozone.524288KB_128reclen.fwrite 4379068 -42.5% 2519619 iozone.524288KB_128reclen.random_write 18466442 ± 14% -75.0% 4611034 iozone.524288KB_128reclen.record_rewrite 10592121 +1.7% 10767895 iozone.524288KB_128reclen.reread 4002754 -37.8% 2491421 iozone.524288KB_128reclen.rewrite 3627215 -29.8% 2548092 ± 3% iozone.524288KB_128reclen.write 347453 -11.4% 307984 iozone.524288KB_16384reclen 3271528 -34.2% 2151430 ± 4% iozone.524288KB_16384reclen.frewrite 3286841 -32.6% 2214421 iozone.524288KB_16384reclen.fwrite 4625809 -39.7% 2791290 iozone.524288KB_16384reclen.random_write 8139628 ± 8% -59.9% 3267021 ± 2% iozone.524288KB_16384reclen.record_rewrite 4074653 -36.6% 2584407 iozone.524288KB_16384reclen.rewrite 3657694 -27.9% 2636561 iozone.524288KB_16384reclen.write 364883 -13.9% 314183 iozone.524288KB_2048reclen 8847193 +2.4% 9060472 iozone.524288KB_2048reclen.fread 4036772 -37.6% 2518570 iozone.524288KB_2048reclen.frewrite 4055761 -37.3% 2541319 iozone.524288KB_2048reclen.fwrite 4648856 -40.5% 2767063 iozone.524288KB_2048reclen.random_write 10209277 -63.8% 3700146 iozone.524288KB_2048reclen.record_rewrite 4120405 -37.4% 2580251 iozone.524288KB_2048reclen.rewrite 3687354 ± 2% -27.5% 2673004 iozone.524288KB_2048reclen.write 431784 ± 8% -14.7% 368311 iozone.524288KB_256reclen 4061568 ± 12% -34.3% 2667748 iozone.524288KB_256reclen.frewrite 4089031 ± 13% -34.6% 2675433 iozone.524288KB_256reclen.fwrite 4153039 ± 13% -37.7% 2586336 iozone.524288KB_256reclen.random_write 21061999 -77.9% 4663314 iozone.524288KB_256reclen.record_rewrite 9644476 ± 11% +13.5% 10947927 iozone.524288KB_256reclen.reread 3957096 ± 8% -36.9% 2498077 iozone.524288KB_256reclen.rewrite 3708958 -29.7% 2607600 iozone.524288KB_256reclen.write 365403 -13.8% 314900 iozone.524288KB_4096reclen 4018347 -36.9% 2537033 iozone.524288KB_4096reclen.frewrite 4064270 -37.3% 2549563 iozone.524288KB_4096reclen.fwrite 4663198 -40.3% 2784744 iozone.524288KB_4096reclen.random_write 10057156 -63.1% 3715403 iozone.524288KB_4096reclen.record_rewrite 4154963 -38.3% 2561944 iozone.524288KB_4096reclen.rewrite 3733178 -28.7% 2662798 iozone.524288KB_4096reclen.write 445806 -19.5% 358905 iozone.524288KB_512reclen 4455258 -38.9% 2723386 iozone.524288KB_512reclen.frewrite 4529424 -39.7% 2732012 iozone.524288KB_512reclen.fwrite 4728030 -42.8% 2702810 iozone.524288KB_512reclen.random_write 19417290 ± 3% -76.9% 4494683 iozone.524288KB_512reclen.record_rewrite 4252001 ± 2% -40.2% 2543611 iozone.524288KB_512reclen.rewrite 3748274 ± 5% -28.2% 2690289 ± 2% iozone.524288KB_512reclen.write 416154 -16.7% 346626 iozone.524288KB_64reclen 4097421 -37.7% 2552856 iozone.524288KB_64reclen.frewrite 4114763 -36.9% 2597729 iozone.524288KB_64reclen.fwrite 4059909 -41.4% 2380185 ± 4% iozone.524288KB_64reclen.random_write 16909664 -73.5% 4487795 ± 5% iozone.524288KB_64reclen.record_rewrite 3885305 -36.0% 2484738 iozone.524288KB_64reclen.rewrite 3485125 ± 2% -26.4% 2565242 iozone.524288KB_64reclen.write 361507 -13.0% 314496 iozone.524288KB_8192reclen 8751425 +3.3% 9044435 iozone.524288KB_8192reclen.bkwd_read 4021932 -37.3% 2519798 iozone.524288KB_8192reclen.frewrite 4029210 -37.4% 2520367 iozone.524288KB_8192reclen.fwrite 4624949 -39.6% 2792755 iozone.524288KB_8192reclen.random_write 9824162 -63.5% 3588696 ± 2% iozone.524288KB_8192reclen.record_rewrite 4113266 -37.5% 2569105 iozone.524288KB_8192reclen.rewrite 8840507 +2.6% 9069156 iozone.524288KB_8192reclen.stride_read 3695751 -27.7% 2670870 iozone.524288KB_8192reclen.write 4652673 ± 24% -48.2% 2411724 ± 38% iozone.64KB_16reclen.random_write 6124949 ± 6% -44.5% 3402157 ± 5% iozone.64KB_16reclen.record_rewrite 4690498 ± 4% -34.5% 3072246 ± 14% iozone.64KB_16reclen.rewrite 7132382 ± 15% -48.9% 3642362 ± 6% iozone.64KB_32reclen.record_rewrite 8120162 ± 6% -54.2% 3720855 ± 19% iozone.64KB_64reclen.random_write 8267460 ± 6% -50.1% 4125200 ± 4% iozone.64KB_64reclen.record_rewrite 4581532 ± 17% -39.5% 2769666 ± 19% iozone.64KB_64reclen.write 4691011 -35.0% 3050516 ± 20% iozone.64KB_8reclen.record_rewrite 4003729 ± 4% -27.2% 2915760 ± 11% iozone.64KB_8reclen.rewrite 3360656 ± 3% -14.1% 2885464 ± 5% iozone.64KB_8reclen.write 402591 ± 2% -20.6% 319718 iozone.65536KB_1024reclen 9791995 ± 2% -3.8% 9416697 ± 3% iozone.65536KB_1024reclen.freread 4307101 -39.1% 2621644 iozone.65536KB_1024reclen.frewrite 4498761 ± 4% -41.9% 2615383 iozone.65536KB_1024reclen.fwrite 5660509 ± 4% -48.7% 2902944 iozone.65536KB_1024reclen.random_write 12809725 ± 2% -69.4% 3916498 iozone.65536KB_1024reclen.record_rewrite 9776019 ± 5% -8.1% 8988945 ± 2% iozone.65536KB_1024reclen.reread 4350957 ± 2% -39.4% 2638716 iozone.65536KB_1024reclen.rewrite 3974207 ± 5% -31.6% 2718382 iozone.65536KB_1024reclen.write 473239 ± 4% -21.9% 369705 ± 2% iozone.65536KB_128reclen 4377096 ± 2% -39.5% 2647855 iozone.65536KB_128reclen.frewrite 4729920 ± 9% -43.2% 2684971 iozone.65536KB_128reclen.fwrite 5468735 ± 5% -46.9% 2903721 iozone.65536KB_128reclen.random_write 19818575 -76.5% 4652744 iozone.65536KB_128reclen.record_rewrite 4213942 ± 2% -38.8% 2580789 iozone.65536KB_128reclen.rewrite 3959940 ± 5% -33.7% 2627238 iozone.65536KB_128reclen.write 339441 ± 2% -14.9% 288777 ± 2% iozone.65536KB_16384reclen 3836114 -29.5% 2705330 iozone.65536KB_16384reclen.frewrite 4026876 ± 2% -32.6% 2713650 ± 5% iozone.65536KB_16384reclen.fwrite 5066003 ± 2% -42.3% 2921152 ± 2% iozone.65536KB_16384reclen.random_write 6647502 -53.6% 3084275 iozone.65536KB_16384reclen.record_rewrite 4000380 -37.0% 2520062 ± 2% iozone.65536KB_16384reclen.rewrite 3689062 ± 4% -29.9% 2585183 iozone.65536KB_16384reclen.write 381408 ± 3% -17.2% 315791 iozone.65536KB_2048reclen 4150052 ± 2% -38.2% 2562800 ± 3% iozone.65536KB_2048reclen.frewrite 4366399 ± 5% -40.6% 2594992 iozone.65536KB_2048reclen.fwrite 5459554 ± 5% -46.4% 2928750 iozone.65536KB_2048reclen.random_write 9999409 -63.3% 3665495 iozone.65536KB_2048reclen.record_rewrite 4323040 ± 2% -39.5% 2616028 iozone.65536KB_2048reclen.rewrite 3975298 ± 4% -31.6% 2719542 ± 2% iozone.65536KB_2048reclen.write 493925 ± 3% -23.3% 379052 iozone.65536KB_256reclen 4618908 ± 2% -40.7% 2739839 iozone.65536KB_256reclen.frewrite 4878676 ± 8% -43.8% 2742467 iozone.65536KB_256reclen.fwrite 5543513 ± 7% -47.5% 2911964 ± 2% iozone.65536KB_256reclen.random_write 21674869 -78.3% 4703546 iozone.65536KB_256reclen.record_rewrite 4316073 ± 2% -40.6% 2561615 ± 2% iozone.65536KB_256reclen.rewrite 4091194 ± 8% -34.4% 2685829 ± 3% iozone.65536KB_256reclen.write 386466 ± 3% -16.4% 322996 iozone.65536KB_4096reclen 4262068 -38.7% 2613308 ± 2% iozone.65536KB_4096reclen.frewrite 4246013 ± 2% -37.8% 2639126 iozone.65536KB_4096reclen.fwrite 5377536 ± 2% -46.7% 2868163 ± 5% iozone.65536KB_4096reclen.random_write 9619397 -62.4% 3619658 iozone.65536KB_4096reclen.record_rewrite 4295062 ± 2% -39.2% 2609899 iozone.65536KB_4096reclen.rewrite 3873263 ± 4% -29.3% 2737042 ± 2% iozone.65536KB_4096reclen.write 471489 -23.1% 362778 ± 2% iozone.65536KB_512reclen 4719039 ± 2% -41.0% 2786233 iozone.65536KB_512reclen.frewrite 4941073 ± 6% -44.5% 2744267 ± 2% iozone.65536KB_512reclen.fwrite 5763651 ± 6% -47.5% 3027789 ± 2% iozone.65536KB_512reclen.random_write 19424730 ± 3% -76.7% 4531186 iozone.65536KB_512reclen.record_rewrite 4506592 ± 2% -41.0% 2657102 iozone.65536KB_512reclen.rewrite 4278222 ± 6% -35.5% 2758807 ± 2% iozone.65536KB_512reclen.write 450461 ± 2% -21.4% 354159 ± 3% iozone.65536KB_64reclen 4245088 ± 3% -39.9% 2551044 ± 5% iozone.65536KB_64reclen.frewrite 4472056 ± 7% -39.1% 2721937 ± 2% iozone.65536KB_64reclen.fwrite 5105996 ± 5% -44.1% 2852003 iozone.65536KB_64reclen.random_write 16847036 ± 2% -72.5% 4626346 iozone.65536KB_64reclen.record_rewrite 4068751 -36.8% 2569793 iozone.65536KB_64reclen.rewrite 3761778 ± 4% -29.8% 2640634 ± 6% iozone.65536KB_64reclen.write 374899 ± 2% -16.6% 312721 iozone.65536KB_8192reclen 4248877 ± 3% -35.4% 2744762 ± 2% iozone.65536KB_8192reclen.frewrite 4347033 ± 2% -36.0% 2782983 iozone.65536KB_8192reclen.fwrite 5102401 ± 2% -42.7% 2923845 iozone.65536KB_8192reclen.random_write 9046426 -60.9% 3535553 iozone.65536KB_8192reclen.record_rewrite 4181552 -37.9% 2598768 iozone.65536KB_8192reclen.rewrite 3725325 ± 5% -27.6% 2698126 iozone.65536KB_8192reclen.write 541652 -21.0% 427956 iozone.8192KB_1024reclen 7588814 ± 2% -47.4% 3994097 iozone.8192KB_1024reclen.frewrite 7082574 ± 4% -44.9% 3904631 iozone.8192KB_1024reclen.fwrite 10345367 -58.8% 4265061 ± 2% iozone.8192KB_1024reclen.random_write 12687343 ± 4% -68.1% 4044617 iozone.8192KB_1024reclen.record_rewrite 7671323 -52.6% 3637718 ± 2% iozone.8192KB_1024reclen.rewrite 6403719 -40.0% 3843378 ± 2% iozone.8192KB_1024reclen.write 715385 -21.7% 559829 ± 2% iozone.8192KB_128reclen 9492398 -55.1% 4265155 iozone.8192KB_128reclen.frewrite 9583339 -55.2% 4294686 iozone.8192KB_128reclen.fwrite 10948189 -59.5% 4439434 iozone.8192KB_128reclen.random_write 19822925 -76.5% 4666594 iozone.8192KB_128reclen.record_rewrite 8024183 ± 2% -51.5% 3895607 iozone.8192KB_128reclen.rewrite 6726543 ± 3% -38.9% 4111241 ± 2% iozone.8192KB_128reclen.write 529512 -12.8% 461764 iozone.8192KB_16reclen 12713193 ± 2% -2.4% 12403682 iozone.8192KB_16reclen.bkwd_read 6142090 ± 2% -37.0% 3869305 iozone.8192KB_16reclen.frewrite 6202098 -36.7% 3924276 iozone.8192KB_16reclen.fwrite 6298580 -40.0% 3782064 iozone.8192KB_16reclen.random_write 9019398 ± 4% -51.7% 4356552 iozone.8192KB_16reclen.record_rewrite 5739034 -37.1% 3608220 iozone.8192KB_16reclen.rewrite 5319076 ± 3% -30.9% 3677574 ± 6% iozone.8192KB_16reclen.write 497042 -19.9% 398208 ± 2% iozone.8192KB_2048reclen 7599511 ± 2% -53.0% 3568886 ± 26% iozone.8192KB_2048reclen.frewrite 7063907 -43.2% 4012680 ± 2% iozone.8192KB_2048reclen.fwrite 8661047 -57.6% 3676566 ± 18% iozone.8192KB_2048reclen.random_write 9853000 -61.9% 3752285 iozone.8192KB_2048reclen.record_rewrite 6834824 -49.3% 3465809 iozone.8192KB_2048reclen.rewrite 5745400 ± 5% -37.6% 3585810 ± 2% iozone.8192KB_2048reclen.write 733833 ± 2% -23.5% 561035 ± 2% iozone.8192KB_256reclen 9868867 ± 2% -56.1% 4335083 iozone.8192KB_256reclen.frewrite 9962499 -56.7% 4309833 ± 2% iozone.8192KB_256reclen.fwrite 11554593 -61.1% 4490540 iozone.8192KB_256reclen.random_write 21283509 -77.9% 4705744 iozone.8192KB_256reclen.record_rewrite 8183994 ± 5% -52.0% 3931252 iozone.8192KB_256reclen.rewrite 6826489 ± 9% -39.7% 4119292 ± 4% iozone.8192KB_256reclen.write 616178 ± 2% -17.3% 509351 ± 2% iozone.8192KB_32reclen 7607962 ± 2% -47.0% 4028488 iozone.8192KB_32reclen.frewrite 7723721 -47.1% 4089104 iozone.8192KB_32reclen.fwrite 8246685 -49.9% 4127517 iozone.8192KB_32reclen.random_write 14882779 ± 2% -3.8% 14313397 ± 3% iozone.8192KB_32reclen.read 13176393 -65.8% 4512706 iozone.8192KB_32reclen.record_rewrite 6905286 ± 2% -45.3% 3777504 iozone.8192KB_32reclen.rewrite 6136280 ± 4% -36.1% 3919141 ± 2% iozone.8192KB_32reclen.write 480910 ± 3% -18.6% 391551 iozone.8192KB_4096reclen 9029468 ± 7% -43.0% 5145507 ± 3% iozone.8192KB_4096reclen.frewrite 4898402 ± 3% -24.6% 3693143 ± 7% iozone.8192KB_4096reclen.fwrite 8547116 -54.0% 3929360 iozone.8192KB_4096reclen.random_write 9254872 -59.3% 3769732 iozone.8192KB_4096reclen.record_rewrite 6569113 ± 2% -49.7% 3303761 iozone.8192KB_4096reclen.rewrite 5563031 ± 2% -39.3% 3374003 ± 3% iozone.8192KB_4096reclen.write 3440021 +2.4% 3522588 iozone.8192KB_4reclen.record_rewrite 711208 ± 2% -23.9% 541401 ± 3% iozone.8192KB_512reclen 9320610 -55.0% 4196921 ± 2% iozone.8192KB_512reclen.frewrite 8957011 -53.4% 4174983 iozone.8192KB_512reclen.fwrite 11809259 -62.1% 4476670 ± 2% iozone.8192KB_512reclen.random_write 18829929 -76.1% 4508938 iozone.8192KB_512reclen.record_rewrite 8411175 ± 3% -53.8% 3887441 iozone.8192KB_512reclen.rewrite 7166144 ± 2% -44.7% 3959966 ± 3% iozone.8192KB_512reclen.write 675616 ± 2% -19.9% 541307 ± 2% iozone.8192KB_64reclen 8613899 ± 4% -51.6% 4172567 iozone.8192KB_64reclen.frewrite 8822220 ± 2% -52.4% 4202922 iozone.8192KB_64reclen.fwrite 9695269 ± 4% -55.4% 4319618 iozone.8192KB_64reclen.random_write 16652653 -72.5% 4584103 iozone.8192KB_64reclen.record_rewrite 7647358 ± 2% -49.8% 3838600 iozone.8192KB_64reclen.rewrite 6513828 ± 5% -38.2% 4025626 ± 4% iozone.8192KB_64reclen.write 461761 ± 4% -22.1% 359687 iozone.8192KB_8192reclen 7795996 ± 6% -54.3% 3564917 iozone.8192KB_8192reclen.frewrite 7654999 ± 6% -54.5% 3479801 ± 2% iozone.8192KB_8192reclen.fwrite 8520759 -54.0% 3918730 iozone.8192KB_8192reclen.random_write 8157000 ± 3% -55.0% 3671143 iozone.8192KB_8192reclen.record_rewrite 6177989 ± 5% -49.5% 3119569 ± 2% iozone.8192KB_8192reclen.rewrite 4416235 ± 5% -34.4% 2896523 ± 3% iozone.8192KB_8192reclen.write 439124 ± 2% -7.6% 405667 iozone.8192KB_8reclen 4698260 -23.2% 3610275 iozone.8192KB_8reclen.frewrite 4768517 -23.2% 3660266 iozone.8192KB_8reclen.fwrite 4380191 -25.2% 3277166 ± 2% iozone.8192KB_8reclen.random_write 6126524 -33.0% 4104360 iozone.8192KB_8reclen.record_rewrite 4439028 -22.8% 3425308 iozone.8192KB_8reclen.rewrite 4266167 ± 5% -20.0% 3412028 ± 2% iozone.8192KB_8reclen.write 5162798 -16.0% 4334478 iozone.average_KBps 60901246 ± 3% -43.0% 34701299 iozone.frewrite_KBps 57283573 ± 3% -42.0% 33239682 iozone.fwrite_KBps 70165219 -50.7% 34625385 iozone.random_write_KBps 1.178e+08 -66.3% 39658202 iozone.record_rewrite_KBps 52267713 ± 2% -42.3% 30152206 iozone.rewrite_KBps 5.00 +20.0% 6.00 iozone.time.percent_of_cpu_this_job_got 59.48 +27.4% 75.76 iozone.time.system_time 390341 ± 16% +40.8% 549598 ± 9% iozone.time.voluntary_context_switches 45439615 ± 3% -32.4% 30728676 iozone.write_KBps Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki ^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 2/2] btrfs: convert btrfs_buffered_write() to use folio interface 2024-10-10 4:46 [PATCH 0/2] btrfs: convert btrfs_buffered_write() to folio interface Qu Wenruo 2024-10-10 4:46 ` [PATCH 1/2] btrfs: make buffered write to copy one page a time Qu Wenruo @ 2024-10-10 4:46 ` Qu Wenruo 2024-10-22 1:17 ` [PATCH 0/2] btrfs: convert btrfs_buffered_write() to " David Sterba 2 siblings, 0 replies; 6+ messages in thread From: Qu Wenruo @ 2024-10-10 4:46 UTC (permalink / raw) To: linux-btrfs The buffered write path is still heavily utilizing the old page interface. Since we have convert it to do a page-by-page copying, it's much easier to convert all involved functions to folio interface, this involves: - btrfs_copy_from_user() - btrfs_drop_folio() - prepare_uptodate_page() - prepare_one_page() - lock_and_cleanup_extent_if_need() - btrfs_dirty_page() All involved function will be changed to accept a folio parameter, and if the word "page" is in the function name, change that to "folio" too. The function btrfs_dirty_page() is exported for v1 space cache, convert v1 cache call site to convert its page to folio for the new interface. And there is a small enhancement for prepare_one_folio(), instead of manually waiting for the page writeback, let __filemap_get_folio() to handle that by using FGP_WRITEBEGIN, which implies (FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE). Signed-off-by: Qu Wenruo <wqu@suse.com> --- fs/btrfs/file.c | 121 ++++++++++++++++-------------------- fs/btrfs/file.h | 6 +- fs/btrfs/free-space-cache.c | 4 +- 3 files changed, 60 insertions(+), 71 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index fae59acb3b8a..1c8f6f8602ff 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -42,7 +42,7 @@ * and be replaced with calls into generic code. */ static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes, - struct page *page, + struct folio *folio, struct iov_iter *i) { size_t copied = 0; @@ -55,10 +55,10 @@ static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes, /* * Copy data from userspace to the current page */ - copied = copy_page_from_iter_atomic(page, offset, count, i); + copied = copy_folio_from_iter_atomic(folio, offset, count, i); /* Flush processor's dcache for this page */ - flush_dcache_page(page); + flush_dcache_folio(folio); /* * if we get a partial write, we can end up with @@ -70,7 +70,7 @@ static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes, * back to page at a time copies after we return 0. */ if (unlikely(copied < count)) { - if (!PageUptodate(page)) { + if (!folio_test_uptodate(folio)) { iov_iter_revert(i, copied); copied = 0; } @@ -88,24 +88,24 @@ static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes, /* * unlocks pages after btrfs_file_write is done with them */ -static void btrfs_drop_page(struct btrfs_fs_info *fs_info, - struct page *page, u64 pos, u64 copied) +static void btrfs_drop_folio(struct btrfs_fs_info *fs_info, + struct folio *folio, u64 pos, u64 copied) { u64 block_start = round_down(pos, fs_info->sectorsize); u64 block_len = round_up(pos + copied, fs_info->sectorsize) - block_start; ASSERT(block_len <= U32_MAX); /* - * Page checked is some magic around finding pages that - * have been modified without going through btrfs_set_page_dirty - * clear it here. There should be no need to mark the pages - * accessed as prepare_one_page() should have marked them accessed - * in prepare_one_page() via find_or_create_page() + * Folio checked is some magic around finding folios that + * have been modified without going through btrfs_dirty_folio(). + * Clear it here. There should be no need to mark the pages + * accessed as prepare_one_folio() should have marked them accessed + * in prepare_one_folio() via find_or_create_page() */ - btrfs_folio_clamp_clear_checked(fs_info, page_folio(page), + btrfs_folio_clamp_clear_checked(fs_info, folio, block_start, block_len); - unlock_page(page); - put_page(page); + folio_unlock(folio); + folio_put(folio); } /* @@ -115,9 +115,9 @@ static void btrfs_drop_page(struct btrfs_fs_info *fs_info, * - Mark modified pages as Uptodate/Dirty and not needing COW fixup * - Update inode size for past EOF write */ -int btrfs_dirty_page(struct btrfs_inode *inode, struct page *page, - loff_t pos, size_t write_bytes, - struct extent_state **cached, bool noreserve) +int btrfs_dirty_folio(struct btrfs_inode *inode, struct folio *folio, + loff_t pos, size_t write_bytes, + struct extent_state **cached, bool noreserve) { struct btrfs_fs_info *fs_info = inode->root->fs_info; int ret = 0; @@ -125,7 +125,6 @@ int btrfs_dirty_page(struct btrfs_inode *inode, struct page *page, u64 start_pos; u64 end_of_last_block; u64 end_pos = pos + write_bytes; - struct folio *folio = page_folio(page); loff_t isize = i_size_read(&inode->vfs_inode); unsigned int extra_bits = 0; @@ -841,11 +840,10 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, * on error we return an unlocked page and the error value * on success we return a locked page and 0 */ -static int prepare_uptodate_page(struct inode *inode, - struct page *page, u64 pos, - u64 len, bool force_uptodate) +static int prepare_uptodate_folio(struct inode *inode, + struct folio *folio, u64 pos, + u64 len, bool force_uptodate) { - struct folio *folio = page_folio(page); u64 clamp_start = max_t(u64, pos, folio_pos(folio)); u64 clamp_end = min_t(u64, pos + len, folio_pos(folio) + folio_size(folio)); int ret = 0; @@ -876,23 +874,13 @@ static int prepare_uptodate_page(struct inode *inode, * The private flag check is essential for subpage as we need to store * extra bitmap using folio private. */ - if (page->mapping != inode->i_mapping || !folio_test_private(folio)) { + if (folio->mapping != inode->i_mapping || !folio_test_private(folio)) { folio_unlock(folio); return -EAGAIN; } return 0; } -static fgf_t get_prepare_fgp_flags(bool nowait) -{ - fgf_t fgp_flags = FGP_LOCK | FGP_ACCESSED | FGP_CREAT; - - if (nowait) - fgp_flags |= FGP_NOWAIT; - - return fgp_flags; -} - static gfp_t get_prepare_gfp_flags(struct inode *inode, bool nowait) { gfp_t gfp; @@ -909,45 +897,46 @@ static gfp_t get_prepare_gfp_flags(struct inode *inode, bool nowait) /* * this just gets page into the page cache and locks them down. */ -static noinline int prepare_one_page(struct inode *inode, struct page **page_ret, - loff_t pos, size_t write_bytes, - bool force_uptodate, bool nowait) +static noinline int prepare_one_folio(struct inode *inode, struct folio **folio_ret, + loff_t pos, size_t write_bytes, + bool force_uptodate, bool nowait) { unsigned long index = pos >> PAGE_SHIFT; gfp_t mask = get_prepare_gfp_flags(inode, nowait); - fgf_t fgp_flags = get_prepare_fgp_flags(nowait); - struct page *page; + fgf_t fgp_flags = nowait ? FGP_WRITEBEGIN | FGP_NOWAIT : FGP_WRITEBEGIN; + struct folio *folio; int ret = 0; again: - page = pagecache_get_page(inode->i_mapping, index, fgp_flags, - mask | __GFP_WRITE); - if (!page) { + folio = __filemap_get_folio(inode->i_mapping, index, fgp_flags, + mask); + if (IS_ERR(folio)) { if (nowait) ret = -EAGAIN; else - ret = -ENOMEM; + ret = PTR_ERR(folio); return ret; } - ret = set_page_extent_mapped(page); + /* Only support page sized folio yet. */ + ASSERT(folio_order(folio) == 0); + ret = set_folio_extent_mapped(folio); if (ret < 0) { - unlock_page(page); - put_page(page); + folio_unlock(folio); + folio_put(folio); return ret; } - ret = prepare_uptodate_page(inode, page, pos, write_bytes, - force_uptodate); + ret = prepare_uptodate_folio(inode, folio, pos, write_bytes, + force_uptodate); if (ret) { /* The page is already unlocked. */ - put_page(page); + folio_put(folio); if (!nowait && ret == -EAGAIN) { ret = 0; goto again; } return ret; } - wait_on_page_writeback(page); - *page_ret = page; + *folio_ret = folio; return 0; } @@ -961,7 +950,7 @@ static noinline int prepare_one_page(struct inode *inode, struct page **page_ret * -EAGAIN - need re-prepare the pages */ static noinline int -lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page *page, +lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct folio *folio, loff_t pos, size_t write_bytes, u64 *lockstart, u64 *lockend, bool nowait, struct extent_state **cached_state) @@ -980,8 +969,8 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page *page, if (nowait) { if (!try_lock_extent(&inode->io_tree, start_pos, last_pos, cached_state)) { - unlock_page(page); - put_page(page); + folio_unlock(folio); + folio_put(folio); return -EAGAIN; } } else { @@ -995,8 +984,8 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page *page, ordered->file_offset <= last_pos) { unlock_extent(&inode->io_tree, start_pos, last_pos, cached_state); - unlock_page(page); - put_page(page); + folio_unlock(folio); + folio_put(folio); btrfs_start_ordered_extent(ordered); btrfs_put_ordered_extent(ordered); return -EAGAIN; @@ -1010,10 +999,10 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page *page, } /* - * We should be called after prepare_one_page() which should have locked + * We should be called after prepare_one_folio() which should have locked * all pages in the range. */ - WARN_ON(!PageLocked(page)); + WARN_ON(!folio_test_locked(folio)); return ret; } @@ -1195,12 +1184,12 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) size_t copied; size_t dirty_sectors; size_t num_sectors; - struct page *page = NULL; + struct folio *folio = NULL; int extents_locked; bool force_page_uptodate = false; /* - * Fault pages before locking them in prepare_one_page() + * Fault pages before locking them in prepare_one_folio() * to avoid recursive lock */ if (unlikely(fault_in_iov_iter_readable(i, write_bytes))) { @@ -1266,8 +1255,8 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) break; } - ret = prepare_one_page(inode, &page, pos, write_bytes, - force_page_uptodate, false); + ret = prepare_one_folio(inode, &folio, pos, write_bytes, + force_page_uptodate, false); if (ret) { btrfs_delalloc_release_extents(BTRFS_I(inode), reserve_bytes); @@ -1275,7 +1264,7 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) } extents_locked = lock_and_cleanup_extent_if_need( - BTRFS_I(inode), page, + BTRFS_I(inode), folio, pos, write_bytes, &lockstart, &lockend, nowait, &cached_state); if (extents_locked < 0) { @@ -1288,7 +1277,7 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) break; } - copied = btrfs_copy_from_user(pos, write_bytes, page, i); + copied = btrfs_copy_from_user(pos, write_bytes, folio, i); num_sectors = BTRFS_BYTES_TO_BLKS(fs_info, reserve_bytes); dirty_sectors = round_up(copied + sector_offset, @@ -1320,7 +1309,7 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) release_bytes = round_up(copied + sector_offset, fs_info->sectorsize); - ret = btrfs_dirty_page(BTRFS_I(inode), page, + ret = btrfs_dirty_folio(BTRFS_I(inode), folio, pos, copied, &cached_state, only_release_metadata); @@ -1339,7 +1328,7 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) btrfs_delalloc_release_extents(BTRFS_I(inode), reserve_bytes); if (ret) { - btrfs_drop_page(fs_info, page, pos, copied); + btrfs_drop_folio(fs_info, folio, pos, copied); break; } @@ -1347,7 +1336,7 @@ ssize_t btrfs_buffered_write(struct kiocb *iocb, struct iov_iter *i) if (only_release_metadata) btrfs_check_nocow_unlock(BTRFS_I(inode)); - btrfs_drop_page(fs_info, page, pos, copied); + btrfs_drop_folio(fs_info, folio, pos, copied); cond_resched(); diff --git a/fs/btrfs/file.h b/fs/btrfs/file.h index 5316d971f6ef..b7f290d56357 100644 --- a/fs/btrfs/file.h +++ b/fs/btrfs/file.h @@ -34,9 +34,9 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, ssize_t btrfs_do_write_iter(struct kiocb *iocb, struct iov_iter *from, const struct btrfs_ioctl_encoded_io_args *encoded); int btrfs_release_file(struct inode *inode, struct file *file); -int btrfs_dirty_page(struct btrfs_inode *inode, struct page *page, - loff_t pos, size_t write_bytes, - struct extent_state **cached, bool noreserve); +int btrfs_dirty_folio(struct btrfs_inode *inode, struct folio *folio, + loff_t pos, size_t write_bytes, + struct extent_state **cached, bool noreserve); int btrfs_fdatawrite_range(struct btrfs_inode *inode, loff_t start, loff_t end); int btrfs_check_nocow_lock(struct btrfs_inode *inode, loff_t pos, size_t *write_bytes, bool nowait); diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index ec34b85dd0e5..40476d882685 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -1463,8 +1463,8 @@ static int __btrfs_write_out_cache(struct inode *inode, u64 dirty_start = i * PAGE_SIZE; u64 dirty_len = min_t(u64, dirty_start + PAGE_SIZE, i_size) - dirty_start; - ret = btrfs_dirty_page(BTRFS_I(inode), io_ctl->pages[i], - dirty_start, dirty_len, &cached_state, false); + ret = btrfs_dirty_folio(BTRFS_I(inode), page_folio(io_ctl->pages[i]), + dirty_start, dirty_len, &cached_state, false); if (ret < 0) goto out_nospc; } -- 2.46.2 ^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 0/2] btrfs: convert btrfs_buffered_write() to folio interface 2024-10-10 4:46 [PATCH 0/2] btrfs: convert btrfs_buffered_write() to folio interface Qu Wenruo 2024-10-10 4:46 ` [PATCH 1/2] btrfs: make buffered write to copy one page a time Qu Wenruo 2024-10-10 4:46 ` [PATCH 2/2] btrfs: convert btrfs_buffered_write() to use folio interface Qu Wenruo @ 2024-10-22 1:17 ` David Sterba 2024-10-22 2:35 ` Qu Wenruo 2 siblings, 1 reply; 6+ messages in thread From: David Sterba @ 2024-10-22 1:17 UTC (permalink / raw) To: Qu Wenruo; +Cc: linux-btrfs On Thu, Oct 10, 2024 at 03:16:11PM +1030, Qu Wenruo wrote: > Inspired by generic_perform_write(), convert btrfs_buffered_write() to > go a page-by-page iteration, then convert it to use folio interface. > > This should provide the basis for use to go > address_operations->write_begin() and write_end() callbacks. > > There is a tiny timing change. > Before this patchset we wait for the page writeback after we get an > uptodate or no need to read the page. > > But now we follow the regular FGP_WRITEBEGIN, which implies FGP_STABLE > and will wait for writeback before reading the page. > > Qu Wenruo (2): > btrfs: make buffered write to copy one page a time > btrfs: convert btrfs_buffered_write() to use folio interface So this is another step towards folios, ok. The first patch got a LKP bot report about performance degradataion due to the change from multiple pages to per page loop, but you mention that. The drop is 16%, that's not something that we should ignore. It was for one workload so this is mabye acceptable. Another thing is that how it's changed to the write begin/end, I don't understand this enough to give it a yes/no. Also this is the buffered write so quite fundamental file operation. I've had the patches in misc-next (and in linux-next) for some time, so we have some testing. I hope we get more reviews too. We're now in rc4, so it's about the time to get it in or delay until the next cycle if there are doubts. Regarding the patches, I have only style comments, you touch a lot of code that is not changed often so it would be good to fix the style of code or comments but correctness comes first so this can be fixed later, I'd really like to be sure this is safe. My suggestion is to add the patches to for-next, we'll have enough time to catch problems and expose the new code to more testing environments. ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 0/2] btrfs: convert btrfs_buffered_write() to folio interface 2024-10-22 1:17 ` [PATCH 0/2] btrfs: convert btrfs_buffered_write() to " David Sterba @ 2024-10-22 2:35 ` Qu Wenruo 0 siblings, 0 replies; 6+ messages in thread From: Qu Wenruo @ 2024-10-22 2:35 UTC (permalink / raw) To: dsterba; +Cc: linux-btrfs 在 2024/10/22 11:47, David Sterba 写道: > On Thu, Oct 10, 2024 at 03:16:11PM +1030, Qu Wenruo wrote: >> Inspired by generic_perform_write(), convert btrfs_buffered_write() to >> go a page-by-page iteration, then convert it to use folio interface. >> >> This should provide the basis for use to go >> address_operations->write_begin() and write_end() callbacks. >> >> There is a tiny timing change. >> Before this patchset we wait for the page writeback after we get an >> uptodate or no need to read the page. >> >> But now we follow the regular FGP_WRITEBEGIN, which implies FGP_STABLE >> and will wait for writeback before reading the page. >> >> Qu Wenruo (2): >> btrfs: make buffered write to copy one page a time >> btrfs: convert btrfs_buffered_write() to use folio interface > > So this is another step towards folios, ok. The first patch got a LKP > bot report about performance degradataion due to the change from > multiple pages to per page loop, but you mention that. The drop is 16%, > that's not something that we should ignore. It was for one workload so > this is mabye acceptable. The performance drop in fact is larger than my expectation, and affects quite some benchmarks, thus I'm not in a rush to push it for upstream anytime soon. > > Another thing is that how it's changed to the write begin/end, I don't > understand this enough to give it a yes/no. It's only one step towards that interface, and there are still quite some work left. And the change to write_begin/end interface is not high on my to-do list. > Also this is the buffered > write so quite fundamental file operation. I've had the patches in > misc-next (and in linux-next) for some time, so we have some testing. I > hope we get more reviews too. We're now in rc4, so it's about the time > to get it in or delay until the next cycle if there are doubts. > > Regarding the patches, I have only style comments, you touch a lot of > code that is not changed often so it would be good to fix the style of > code or comments but correctness comes first so this can be fixed later, > I'd really like to be sure this is safe. > > My suggestion is to add the patches to for-next, we'll have enough time > to catch problems and expose the new code to more testing environments. OK, I can do the push, but if anyone hits any functional problems I'll be more than happier to revert/remove them immediately. Thanks, Qu ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2024-10-22 2:35 UTC | newest] Thread overview: 6+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2024-10-10 4:46 [PATCH 0/2] btrfs: convert btrfs_buffered_write() to folio interface Qu Wenruo 2024-10-10 4:46 ` [PATCH 1/2] btrfs: make buffered write to copy one page a time Qu Wenruo 2024-10-17 7:08 ` kernel test robot 2024-10-10 4:46 ` [PATCH 2/2] btrfs: convert btrfs_buffered_write() to use folio interface Qu Wenruo 2024-10-22 1:17 ` [PATCH 0/2] btrfs: convert btrfs_buffered_write() to " David Sterba 2024-10-22 2:35 ` Qu Wenruo
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