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Date:      Sun, 13 Jan 2008 21:11:51 +0100
From:      Kris Kennaway <kris@FreeBSD.org>
To:        Toomas Aas <toomas.aas@raad.tartu.ee>
Cc:        freebsd-stable@freebsd.org, Wayne Sierke <ws@au.dyndns.ws>
Subject:   Re: 6.3-PRERELEASE desktop system periodically freezes momentarily
Message-ID:  <478A7087.6020908@FreeBSD.org>
In-Reply-To: <478A34A2.8050608@raad.tartu.ee>
References:  <1199812249.96494.133.camel@predator-ii.buffyverse>	<4783C8A8.2090705@raad.tartu.ee>	<4783D41B.3000204@FreeBSD.org>	<4783D748.1050401@raad.tartu.ee>	<4783D824.1050502@FreeBSD.org>	<4783DB72.6030605@raad.tartu.ee> <4783DCAA.1080108@FreeBSD.org>	<47851247.1020306@raad.tartu.ee> <4785186E.4070609@FreeBSD.org>	<47852EFF.8000103@raad.tartu.ee> <478530FC.8090701@FreeBSD.org>	<478531C4.10909@raad.tartu.ee> <4785334F.205@FreeBSD.org> <47866B15.5070002@raad.tartu.ee> <47867FAD.9050701@FreeBSD.org> <478A34A2.8050608@raad.tartu.ee>

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Toomas Aas wrote:
> Kris Kennaway wrote:
>>
>> sysctl debug.mutex.prof.enable=1
>> ... trigger hang ...
>> sysctl debug.mutex.prof.enable=0
>>
>> and send me the output of
>>
>> sysctl debug.mutex.prof.stats
> 
> The output is here:
> http://www.raad.tartu.ee/~toomas/mutex_stats.txt

This one also shows giant contention from the syncer and your mouse 
pointer that should also be fixed by updating to 7.0.

Kris



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