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Re: XFS unlink still slow on 3.1.9 kernel ?

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: XFS unlink still slow on 3.1.9 kernel ?
From: Richard Ems <richard.ems@xxxxxxxxxxxxxxxxx>
Date: Tue, 14 Feb 2012 11:54:48 +0100
Cc: xfs@xxxxxxxxxxx
In-reply-to: <20120213211654.GA20192@xxxxxxxxxxxxx>
References: <20120213170825.GA7197@xxxxxxxxxxxxx> <4F394442.9020307@xxxxxxxxxxxxxxxxx> <20120213171556.GA13449@xxxxxxxxxxxxx> <4F3947D6.5060402@xxxxxxxxxxxxxxxxx> <20120213172937.GA25248@xxxxxxxxxxxxx> <4F394E10.9000804@xxxxxxxxxxxxxxxxx> <20120213180220.GA24163@xxxxxxxxxxxxx> <4F395134.8030202@xxxxxxxxxxxxxxxxx> <20120213181012.GA27962@xxxxxxxxxxxxx> <4F395B1A.7010709@xxxxxxxxxxxxxxxxx> <20120213211654.GA20192@xxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20120129 Thunderbird/10.0.1
On 02/13/2012 10:16 PM, Christoph Hellwig wrote:
> On Mon, Feb 13, 2012 at 07:48:58PM +0100, Richard Ems wrote:
>> I already updated to 3.2.4 and started the same "find dir" command again
>> that previously took 100 min to run. It has been running now for over 30
>> min ...
>>
>> Should this "find" run time also improve ?
> 
> No, not by that change anyway.
> 
>> Or will only unlink run time improve ?
> 
> Yes.

I ran a rm on a smaller dir, containing 9225 dirs and 425659 files and
it took ~37 sec on 3.1.9 and ~20 sec on 3.2.4, so I do see a good
improvement there.

Thanks,
Richard


-- 
Richard Ems       mail: Richard.Ems@xxxxxxxxxxxxxxxxx

Cape Horn Engineering S.L.
C/ Dr. J.J. Dómine 1, 5º piso
46011 Valencia
Tel : +34 96 3242923 / Fax 924
http://www.cape-horn-eng.com

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