linux-kernel - Re: getdents - ext4 vs btrfs performance

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Date:	Thu, 1 Mar 2012 15:03:53 +0100
From:	Jacek Luczak <difrost.kernel@...il.com>
To:	Hillf Danton <dhillf@...il.com>
Cc:	Chris Mason <chris.mason@...cle.com>, linux-ext4@...r.kernel.org,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-btrfs@...r.kernel.org,
	lczerner@...hat.com
Subject: Re: getdents - ext4 vs btrfs performance

2012/3/1 Hillf Danton <dhillf@...il.com>:
> On Thu, Mar 1, 2012 at 9:35 PM, Jacek Luczak <difrost.kernel@...il.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
>>
>> 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.

-Jacek
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