From: Eric Sandeen <sandeen@sandeen.net>
To: Norbert Veber <nveber@pyre.virge.net>
Cc: Michael Monnerie <michael.monnerie@is.it-management.at>, xfs@oss.sgi.com
Subject: Re: Small files perform much faster on newly formatted fs?
Date: Wed, 08 Jun 2011 15:52:30 -0500 [thread overview]
Message-ID: <4DEFE10E.1070509@sandeen.net> (raw)
In-Reply-To: <20110608122638.GQ28625@pyre.virge.net>
On 6/8/11 7:26 AM, Norbert Veber wrote:
> On Wed, Jun 08, 2011 at 09:11:10AM +0200, Michael Monnerie wrote:
>> On Dienstag, 7. Juni 2011 Norbert Veber wrote:
>>> 20 seconds vs 3+ minutes?! The only difference I can see is
>>> lazy-count=1 and a larger agcount. Sunit and swidth were also set
>>> automatically by mkfs this time.
>>
>> Then retry mounting the old fs with sunit= and swidth= parameters. Are
>> they on the same disks? What are your disks (number, kind)?
>
> Yes its already mounted this way as I mentioned in my original message:
> /dev/mapper/vg0-shared on /shared type xfs (rw,noatime,sunit=128,swidth=256)
>
> Both filesystems are on the same MD raid 5 which consists of 3 1 tb WD
> Black hard drive.
The 2 filesystems are at different locations on the disks, so that will make
some difference.
It's probably also possible that your old log is not stripe-aligned.
Not sure what else it might be ... You did get the units right on your
stripe specification at mount-time, good job! ;)
-Eric
> Thanks,
>
> Norbert
>
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next prev parent reply other threads:[~2011-06-08 20:52 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-07 16:37 Small files perform much faster on newly formatted fs? Norbert Veber
2011-06-08 7:11 ` Michael Monnerie
2011-06-08 12:26 ` Norbert Veber
2011-06-08 13:47 ` Michael Monnerie
2011-06-08 18:58 ` Norbert Veber
2011-06-09 5:44 ` Michael Monnerie
2011-06-08 20:52 ` Eric Sandeen [this message]
2011-06-08 21:16 ` Eric Sandeen
2011-06-09 1:29 ` Dave Chinner
2011-06-09 8:22 ` Christoph Hellwig
2011-06-09 13:48 ` Norbert Veber
2011-06-09 16:30 ` Michael Monnerie
2011-06-09 20:30 ` Norbert Veber
2011-06-09 21:17 ` Dave Chinner
2011-06-10 0:54 ` Norbert Veber
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