From: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
To: Dave Chinner <david@fromorbit.com>
Cc: "xfs-masters@oss.sgi.com" <xfs-masters@oss.sgi.com>,
"xfs@oss.sgi.com" <xfs@oss.sgi.com>
Subject: Re: Vanilla 3.0.78
Date: Mon, 29 Jul 2013 10:31:52 +0200 [thread overview]
Message-ID: <51F62878.4090408@profihost.ag> (raw)
In-Reply-To: <20130729082228.GG13468@dastard>
Am 29.07.2013 10:22, schrieb Dave Chinner:
> On Mon, Jul 29, 2013 at 09:39:37AM +0200, Stefan Priebe - Profihost AG wrote:
>> Hi,
>>
>> while running 3.0.78 and doing heavy rsync tasks on a raid 50 i'm gettig
>> these call traces:
>
> Judging by the timestamps the problem clears and the system keeps
> running?
Yes.
> If so, the problem is likely to be a combination of contention on a
> specific AG for allocation and slow IO. Given it is RAID 50, it's
> probably really slow IO, and probably lots of threads wanting the
> lock and queuing up on it.
>
> What's 'iostat -m -x -d 5' look like when these messages are dumped
> out?
Don't have that but some nagios stats. There were 1000 iop/s and 8MB/s.
But i can reduce the tasks done in parallel if this is the problem.
Stefan
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next prev parent reply other threads:[~2013-07-29 8:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-29 7:39 Vanilla 3.0.78 Stefan Priebe - Profihost AG
2013-07-29 8:22 ` Dave Chinner
2013-07-29 8:31 ` Stefan Priebe - Profihost AG [this message]
2013-07-29 10:01 ` Dave Chinner
2013-07-29 11:02 ` Stefan Priebe - Profihost AG
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