linux-kernel - Re: [Bugme-new] [Bug 15426] New: Running many copies of bonnie++ on different filesystems seems to deadlock in sync

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Message-ID: <4B90E071.1060903@Calva.COM>
Date:	Fri, 05 Mar 2010 11:44:01 +0100
From:	John Hughes <john@...va.COM>
To:	Andre Noll <maan@...temlinux.org>
CC:	Jens Axboe <jens.axboe@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Bugme-new] [Bug 15426] New: Running many copies of bonnie++
 on different filesystems seems to deadlock in sync

Andre Noll wrote:
> On 15:55, John Hughes wrote:
>   
>>> That's the same patch you posted two weeks ago and on which Linus
>>> commented he thinks it is broken. He also proposed another, simpler
>>> patch (included below) which I'm running for a few days and which
>>> fixes the sync problem for me.
>>>  
>>>       
>> I've tried the "simpler patch" on my system and it makes no difference 
>> for me.
>>     
>
> Does it make no difference to Jens' patch, or no difference to an
> unpatched kernel?
>   
No difference to an unpatched kernel.  I didn't think of stacking the 
patches.
> BTW, switching from cfq to noop or deadline also improved things a
> bit for me.
>   
Will try that.

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