From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Norbert Preining <preining@logic.at>
Cc: linux-kernel@vger.kernel.org
Subject: Re: finding reasons for disk spin ups
Date: Tue, 23 Jun 2009 19:14:09 +0100 [thread overview]
Message-ID: <20090623181409.GA12814@srcf.ucam.org> (raw)
In-Reply-To: <20090623170006.GC30649@gamma.logic.tuwien.ac.at>
On Tue, Jun 23, 2009 at 07:00:06PM +0200, Norbert Preining wrote:
> Hi all,
> (please cc)
>
> is there a way I can find the reasons why my disk is spinning up again
> and again? I tried to monitor io with
> iotop -o -d 0.01 -b -qqq -t
> but sometimes the disks spins up without anything showing up.
> The partitions are mounted with noatime.
>
> Is there any kernel interface telling me why/whcih process called for
> the sync so that the disk wakes up?
Yes. /proc/sys/vm/block_dump - set that to 1. Make sure you disable
syslog first.
--
Matthew Garrett | mjg59@srcf.ucam.org
prev parent reply other threads:[~2009-06-23 18:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-23 17:00 finding reasons for disk spin ups Norbert Preining
2009-06-23 18:14 ` Matthew Garrett [this message]
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