linux-kernel - Re: 2.6.35-rc3: System unresponsive under load

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Message-ID: <4C26219F.3010206@colorfullife.com>
Date:	Sat, 26 Jun 2010 17:49:51 +0200
From:	Manfred Spraul <manfred@...orfullife.com>
To:	Luca Tettamanti <kronos.it@...il.com>
CC:	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Julia Lawall <julia@...u.dk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	maciej.rutecki@...il.com
Subject: Re: 2.6.35-rc3: System unresponsive under load

Hi,

On 06/26/2010 05:47 PM, Manfred Spraul wrote:
> Hi Luca,
>
> On 06/26/2010 02:52 PM, Luca Tettamanti wrote:
>> They don't seem really hung as before, I see two different behaviours:
>> * Near the end of the run ab is frozen for a few seconds, but in the
>> end all requests are processed; however I see a few "length" errors,
>> meaning that the received page does not match the expected content
>> (I'm testing a static page):
>>
> That's consistent with what I see:
> If I run:
> #./semtimedop 100 100&
> #./semtimedop 100 100&
> #./semtimedop 100 100&
> #./semtimedop 100 100&
>
Sorry for the noise, but I forgot one important piece:
The patch from

http://marc.info/?l=linux-mm&m=127750107030238

must be applied - otherwise you'll just see errors due to IN_WAKEUP.

--
     Manfred
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