From: Chris Mason <chris.mason@oracle.com>
To: Jacek Luczak <difrost.kernel@gmail.com>
Cc: Hillf Danton <dhillf@gmail.com>,
linux-ext4@vger.kernel.org,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-btrfs@vger.kernel.org, lczerner@redhat.com
Subject: Re: getdents - ext4 vs btrfs performance
Date: Thu, 1 Mar 2012 09:18:23 -0500 [thread overview]
Message-ID: <20120301141823.GV5054@shiny> (raw)
In-Reply-To: <CADDYkjR+d+pFYN-mQ91ZP4KcU4zzwC5jmxj1xxMDrp+X+Z8c6g@mail.gmail.com>
On Thu, Mar 01, 2012 at 03:03:53PM +0100, Jacek Luczak wrote:
> 2012/3/1 Hillf Danton <dhillf@gmail.com>:
> > On Thu, Mar 1, 2012 at 9:35 PM, Jacek Luczak <difrost.kernel@gmail.com> wrote:
> >>
> >> While I was about to grab acp I've noticed seekwatcher with made my day :)
> >>
> >> seekwatcher run of tar cf to eliminate writes (all done on 3.2.7):
> >> 1) btrfs: http://dozzie.jarowit.net/~dozzie/luczajac/tar_btrfs.png
> >> 2) ext4: http://dozzie.jarowit.net/~dozzie/luczajac/tar_ext4.png
> >> 3) both merged: http://dozzie.jarowit.net/~dozzie/luczajac/tar_btrfs_ext4.png
Whoa, seekwatcher makes it pretty clear.
> >>
> >> I will send acp results soon.
> >>
> > Would you please take reiserfs into account?
>
> As of now not (lack of time) but I'm pretty close to consider XFS in
> the game. Whenever I will have more time and there won't be a pressure
> on giving host back to production I will redo same tests for reiserfs.
>
> Now I'm focused on the userspace sorting results.
reiserfs should have results very similar to ext4. The directory
hashing used by reiserfs is going to result in a very random read
pattern.
XFS will probably beat btrfs in this test. Their directory indexes
reflect on disk layout very well.
-chris
next prev parent reply other threads:[~2012-03-01 14:18 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-29 13:52 getdents - ext4 vs btrfs performance Jacek Luczak
2012-02-29 13:55 ` Jacek Luczak
2012-02-29 13:55 ` Jacek Luczak
2012-02-29 14:07 ` Jacek Luczak
2012-02-29 14:07 ` Jacek Luczak
2012-02-29 14:07 ` Jacek Luczak
2012-02-29 14:21 ` Jacek Luczak
2012-02-29 14:21 ` Jacek Luczak
2012-02-29 14:21 ` Jacek Luczak
2012-02-29 14:42 ` Chris Mason
2012-02-29 14:55 ` Jacek Luczak
2012-03-01 13:35 ` Jacek Luczak
2012-03-01 13:50 ` Hillf Danton
2012-03-01 14:03 ` Jacek Luczak
2012-03-01 14:18 ` Chris Mason [this message]
2012-03-01 14:43 ` Jacek Luczak
2012-03-01 14:43 ` Jacek Luczak
2012-03-01 14:51 ` Chris Mason
2012-03-01 14:51 ` Chris Mason
2012-03-01 14:51 ` Chris Mason
2012-03-01 14:57 ` Jacek Luczak
2012-03-01 14:57 ` Jacek Luczak
2012-03-01 14:57 ` Jacek Luczak
2012-03-01 18:42 ` Ted Ts'o
2012-03-02 9:51 ` Jacek Luczak
2012-03-01 4:44 ` Theodore Tso
2012-03-01 4:44 ` Theodore Tso
2012-03-01 4:44 ` Theodore Tso
2012-03-01 14:38 ` Chris Mason
2012-03-01 14:38 ` Chris Mason
2012-03-02 10:05 ` Jacek Luczak
2012-03-02 10:05 ` Jacek Luczak
2012-03-02 10:05 ` Jacek Luczak
2012-03-02 14:00 ` Chris Mason
2012-03-02 14:16 ` Jacek Luczak
2012-03-02 14:16 ` Jacek Luczak
2012-03-02 14:16 ` Jacek Luczak
2012-03-02 14:26 ` Chris Mason
2012-03-02 14:26 ` Chris Mason
2012-03-02 19:32 ` Ted Ts'o
2012-03-02 19:50 ` Chris Mason
2012-03-05 13:10 ` Jan Kara
2012-03-03 22:41 ` Jacek Luczak
2012-03-03 22:41 ` Jacek Luczak
2012-03-04 10:25 ` Jacek Luczak
2012-03-04 10:25 ` Jacek Luczak
2012-03-05 11:32 ` Jacek Luczak
2012-03-05 11:32 ` Jacek Luczak
2012-03-05 11:32 ` Jacek Luczak
2012-03-06 0:37 ` Chris Mason
2012-03-06 0:37 ` Chris Mason
2012-03-08 17:02 ` Phillip Susi
2012-03-09 11:29 ` Lukas Czerner
2012-03-09 14:34 ` Chris Mason
2012-03-10 0:09 ` Andreas Dilger
2012-03-10 4:48 ` Ted Ts'o
2012-03-11 10:30 ` Andreas Dilger
2012-03-11 16:13 ` Ted Ts'o
2012-03-15 10:42 ` Jacek Luczak
2012-03-15 10:42 ` Jacek Luczak
2012-03-15 10:42 ` Jacek Luczak
2012-03-18 20:56 ` Ted Ts'o
2012-03-13 19:05 ` Phillip Susi
2012-03-13 19:53 ` Ted Ts'o
2012-03-13 20:22 ` Phillip Susi
2012-03-13 21:33 ` Ted Ts'o
2012-03-14 2:48 ` Yongqiang Yang
2012-03-14 2:51 ` Ted Ts'o
2012-03-14 14:17 ` Zach Brown
2012-03-14 16:48 ` Ted Ts'o
2012-03-14 17:37 ` Zach Brown
2012-03-14 8:12 ` Lukas Czerner
2012-03-14 9:29 ` Yongqiang Yang
2012-03-14 9:29 ` Yongqiang Yang
2012-03-14 9:29 ` Yongqiang Yang
2012-03-14 9:38 ` Lukas Czerner
2012-03-14 12:50 ` Ted Ts'o
2012-03-14 14:34 ` Lukas Czerner
2012-03-14 17:02 ` Ted Ts'o
2012-03-14 19:17 ` Chris Mason
2012-03-14 14:28 ` Phillip Susi
2012-03-14 16:54 ` Ted Ts'o
2012-03-10 3:52 ` Ted Ts'o
2012-03-15 7:59 ` Jacek Luczak
2012-03-15 7:59 ` Jacek Luczak
2012-03-15 7:59 ` Jacek Luczak
-- strict thread matches above, loose matches on Subject: below --
2012-02-29 13:31 Jacek Luczak
2012-02-29 13:51 ` Chris Mason
2012-02-29 14:00 ` Lukas Czerner
2012-02-29 14:05 ` Chris Mason
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