From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cn.fujitsu.com ([222.73.24.84]:32501 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752557Ab2JIHcb convert rfc822-to-8bit (ORCPT ); Tue, 9 Oct 2012 03:32:31 -0400 Received: from fnstmail02.fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id q997WTW6018514 for ; Tue, 9 Oct 2012 15:32:29 +0800 Message-ID: <5073D31D.6050805@cn.fujitsu.com> Date: Tue, 09 Oct 2012 15:32:45 +0800 From: Miao Xie Reply-To: miaox@cn.fujitsu.com MIME-Version: 1.0 To: Linux Btrfs Subject: Re: [RFC][PATCH V2 0/4] Btrfs: introduce extent buffer cache to btrfs References: <5062E563.7090105@cn.fujitsu.com> In-Reply-To: <5062E563.7090105@cn.fujitsu.com> Content-Type: text/plain; charset=UTF-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Any comment？ On wed, 26 Sep 2012 19:22:11 +0800, Miao Xie wrote: > This patchset introduce extent buffer cache to btrfs. The basic idea > is to reduce the search time and the contentions of the extent buffer > lock by re-using the last search result. > > I ran stress.sh, xfstests and some other tools to test it, all of them > worked well. > > As a performance improvement patchset, of course we did performance test. > Because this patchset is to improve the b+ tree search, in other words, > it improves the performance of the metadata operations, we use file creation > test to measure it. So we ran 10 tasks, and all of them created 100000 files > in their own directories at the same time. As the result, we found this patchset > makes btrfs ~20% faster(98s -> 77s). > > we can pull this patchset from the URL > > git://github.com/miaoxie/linux-btrfs.git extent-buffer-cache > > Thanks > Miao > --- > Miao Xie (4): > Btrfs: restructure btrfs_search_slot() > Btrfs: introduce extent buffer cache for each i-node > Btrfs: introduce extent buffer cache for delayed inode > Btrfs: introduce extent buffer cache for delayed reference > > fs/btrfs/acl.c | 1 - > fs/btrfs/btrfs_inode.h | 6 +- > fs/btrfs/compression.c | 1 - > fs/btrfs/ctree.c | 598 ++++++++++++++++++++++++++++++++++++--------- > fs/btrfs/ctree.h | 32 +++- > fs/btrfs/delayed-inode.c | 23 ++ > fs/btrfs/dir-item.c | 2 + > fs/btrfs/disk-io.c | 2 +- > fs/btrfs/export.c | 1 - > fs/btrfs/extent-tree.c | 6 + > fs/btrfs/extent_io.c | 9 +- > fs/btrfs/extent_io.h | 38 +++ > fs/btrfs/file-item.c | 4 +- > fs/btrfs/file.c | 5 +- > fs/btrfs/inode-item.c | 10 +- > fs/btrfs/inode.c | 36 +++- > fs/btrfs/ioctl.c | 1 - > fs/btrfs/ordered-data.c | 1 - > fs/btrfs/relocation.c | 1 - > fs/btrfs/send.c | 1 - > fs/btrfs/super.c | 1 - > fs/btrfs/transaction.c | 11 + > fs/btrfs/transaction.h | 4 +- > fs/btrfs/tree-log.c | 6 +- > fs/btrfs/xattr.c | 2 +- > 25 files changed, 651 insertions(+), 151 deletions(-) > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >