From: Li Zefan <lizf@cn.fujitsu.com>
To: linux-btrfs@vger.kernel.org
Subject: [PATCH 0/5] btrfs: Add lzo compression support
Date: Mon, 25 Oct 2010 15:11:22 +0800 [thread overview]
Message-ID: <4CC52D9A.3030709@cn.fujitsu.com> (raw)
Lzo is a much faster compression algorithm than gzib, so would allow
more users to enable transparent compression, and some users can
choose from compression ratio and compression speed.
Usage:
# mount -t btrfs -o compress[=<zlib,lzo>] dev /mnt
or
# mount -t btrfs -o compress-force[=<zlib,lzo>] dev /mnt
"-o compress" without argument is still allowed for compatability.
Performance:
The test copied a linux source tarball (~400M) from an ext4 partition
to the btrfs partition, and then extracted the tarball.
(time in second)
lzo zlib nocompress
copy: 10.6 21.7 14.9
extract: 70.1 94.4 66.6
(data size in MB)
lzo zlib nocompress
copy: 185.87 108.69 394.49
extract: 193.80 132.36 381.21
Other:
The defrag ioctl is also updated, so one can choose lzo or zlib when
turning on compression in defrag operation.
TODO:
- Update btrfs-progs accordingly.
---
fs/btrfs/Makefile | 2 +-
fs/btrfs/btrfs_inode.h | 2 +-
fs/btrfs/compression.c | 329 +++++++++++++++++++++++++++++++++++++-
fs/btrfs/compression.h | 72 ++++++--
fs/btrfs/ctree.h | 11 +-
fs/btrfs/extent_io.c | 5 +-
fs/btrfs/extent_io.h | 17 ++-
fs/btrfs/extent_map.c | 2 +
fs/btrfs/extent_map.h | 3 +-
fs/btrfs/file.c | 2 +
fs/btrfs/inode.c | 82 ++++++----
fs/btrfs/ioctl.c | 10 +-
fs/btrfs/ioctl.h | 9 +-
fs/btrfs/lzo.c | 409 +++++++++++++++++++++++++++++++++++++++++++++++
fs/btrfs/ordered-data.c | 18 ++-
fs/btrfs/ordered-data.h | 8 +-
fs/btrfs/super.c | 47 +++++-
fs/btrfs/zlib.c | 361 +++++++----------------------------------
18 files changed, 1013 insertions(+), 376 deletions(-)
next reply other threads:[~2010-10-25 7:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-25 7:11 Li Zefan [this message]
2010-10-25 7:11 ` [PATCH 1/5] btrfs: Fix bugs in zlib workspace Li Zefan
2010-10-25 7:12 ` [PATCH 2/5] btrfs: Allow to add new compression algorithm Li Zefan
2010-10-25 7:12 ` [PATCH 3/5] btrfs: Add lzo compression support Li Zefan
2010-10-25 7:12 ` [PATCH 4/5] btrfs: Allow to specify compress method when defrag Li Zefan
2010-10-25 7:13 ` [PATCH 5/5] btrfs: Extract duplicate decompress code Li Zefan
2010-10-26 2:13 ` [PATCH 0/5] btrfs: Add lzo compression support Chris Mason
2010-10-26 2:34 ` Li Zefan
2010-11-15 18:55 ` Mitch Harder
2010-11-16 0:57 ` Li Zefan
2010-11-16 18:51 ` Mitch Harder
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