linux-kernel - Re: 2.6.22 - Suspend and Weird Load Averages

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Message-ID: <82e4877d0707251240t4c5dcff7wb3c7523e577ddb76@mail.gmail.com>
Date:	Wed, 25 Jul 2007 15:40:11 -0400
From:	"Parag Warudkar" <parag.warudkar@...il.com>
To:	"Pavel Machek" <pavel@....cz>
Cc:	linux-kernel@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>,
	"Nigel Cunningham" <ncunningham@...uxmail.org>
Subject: Re: 2.6.22 - Suspend and Weird Load Averages

Hi Pavel!

On 7/25/07, Pavel Machek <pavel@....cz> wrote:

> Known, and Rafael/Nigel have patches to fix that.

Thanks for the info - Rafael/Nigel do you have any patches for me to
try/modify - I am just curious to see what approach the patches take
to fix this - I had started thinking about TASK_SUSPENDED which would
be equivalent to TASK_UNINTERRUPTIBLE for all purposes except load
calculation (not counted in nr_uninterruptible) but somehow I think
there might be a less intrusive / more correct way to do this.

>
> OTOH I'm not sure it is a problem -- lets just say that suspend is
> hard work and therefore it raises load avg?
>                                                        Pavel

Hehe, nope - that would be inefficient suspend for me! Any way I
understand it's purely a cosmetic problem but if we could be
cosmetically correct to report the right uptime after suspend sans the
sleep time (unlike other OSes which include sleep time when reporting
it) I think we should also fix this one to report correct load
averages.

Cheers

Parag
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