From: Stefan Priebe <s.priebe@profihost.ag>
To: stan@hardwarefreak.com
Cc: xfs@oss.sgi.com
Subject: Re: suddenly slow writes on XFS Filesystem
Date: Sun, 06 May 2012 21:25:10 +0200 [thread overview]
Message-ID: <4FA6D016.6010702@profihost.ag> (raw)
In-Reply-To: <4FA69CB0.8000008@hardwarefreak.com>
Am 06.05.2012 17:45, schrieb Stan Hoeppner:
> On 5/6/2012 5:33 AM, Martin Steigerwald wrote:
>> Am Sonntag, 6. Mai 2012 schrieb Stefan Priebe:
>>> It is a raid 10 of 20 SATA Disks and i can only write to them with
>>> about 700kb/s while doing random i/o. I tried vanilla Kernel 3.0.30
>>> and 3.3.4 - no difference. Writing to another partition on another xfs
>>> array works fine.
>>
>> Additionally what RAID is this? SoftRAID or some - which one? - hardware
>> RAID controller? And what disks are used, whats the rpm of these?
>
> I doubt much of this stuff matters. Stefan's filesystem is 96% full,
> w/~200GB free. This free space is likely heavily fragmented. If he's
> doing allocation in this fragmented free space I'd think that would
> fully explain his write performance dropping off a cliff due to massive
> head seeking.
>
Thanks Stan that's it. After deleting 200GB-300GB it's running fine again.
What is the general recommandation of free space?
Greets Stefan
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next prev parent reply other threads:[~2012-05-06 19:25 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-06 9:01 suddenly slow writes on XFS Filesystem Stefan Priebe
2012-05-06 10:31 ` Martin Steigerwald
2012-05-06 10:33 ` Martin Steigerwald
2012-05-06 15:45 ` Stan Hoeppner
2012-05-06 19:25 ` Stefan Priebe [this message]
2012-05-07 1:39 ` Dave Chinner
2012-05-06 21:43 ` Martin Steigerwald
2012-05-07 6:40 ` Stefan Priebe - Profihost AG
2012-05-07 1:34 ` Dave Chinner
2012-05-07 6:39 ` Stefan Priebe - Profihost AG
2012-05-07 7:17 ` Dave Chinner
2012-05-07 7:22 ` Stefan Priebe - Profihost AG
2012-05-07 16:36 ` Stan Hoeppner
2012-05-07 19:08 ` Martin Steigerwald
2012-05-07 20:05 ` Stefan Priebe
2012-05-09 6:57 ` Stan Hoeppner
2012-05-09 7:04 ` Dave Chinner
2012-05-09 7:36 ` Stefan Priebe - Profihost AG
2012-05-09 7:49 ` Stan Hoeppner
2013-02-15 15:06 ` 32bit apps and inode64 Stefan Priebe - Profihost AG
2013-02-15 21:46 ` Ben Myers
2013-02-16 10:24 ` Stefan Priebe - Profihost AG
2013-02-17 21:33 ` Dave Chinner
2013-02-18 8:12 ` Stefan Priebe - Profihost AG
2013-02-18 22:06 ` Dave Chinner
2013-02-17 8:13 ` Jeff Liu
2013-02-19 19:11 ` Ben Myers
2012-05-07 23:42 ` suddenly slow writes on XFS Filesystem Dave Chinner
2012-05-07 8:21 ` Martin Steigerwald
2012-05-07 16:44 ` Stan Hoeppner
2012-05-07 8:31 ` Martin Steigerwald
2012-05-07 13:57 ` Stefan Priebe - Profihost AG
2012-05-07 14:32 ` Martin Steigerwald
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