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From: Alexander Holler <holler@ahsoftware.de>
To: Fredrik Tolf <fredrik@dolda2000.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Weird disk idling
Date: Mon, 27 May 2013 03:54:46 +0200	[thread overview]
Message-ID: <51A2BCE6.806@ahsoftware.de> (raw)
In-Reply-To: <alpine.DEB.2.02.1305260712220.8957@shack.dolda2000.com>

Am 26.05.2013 07:29, schrieb Fredrik Tolf:

> I'm sure you all know what the various fields are (except the first,

Hmm, I had to look at Documentation/block/stat.txt.

> which is just a timestamp), so as you can see, there are 135 requests in
> the queue, but no reads or writes happen, in this case, for at least 800
> ms.
> 
> Is this behavior normal and expected, or is there something wrong here?
> In the latter case, is it my hardware that is failing somehow, or can
> there be some software weirdness that can be tweaked away or bugfixed?

I would say thats how caches do work. You might have a look at

sysctl vm

which shows a lot of the knobs you can turn to change some of the
aspects you see.

Regards,

Alexander Holler

      parent reply	other threads:[~2013-05-27  1:55 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-26  5:29 Weird disk idling Fredrik Tolf
2013-05-26  8:58 ` ethan
2013-05-29  0:14   ` Valdis.Kletnieks
2013-05-27  1:54 ` Alexander Holler [this message]

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