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Re: deleting 2TB lots of files with delaylog: sync helps?

To: xfs@xxxxxxxxxxx
Subject: Re: deleting 2TB lots of files with delaylog: sync helps?
From: Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx>
Date: Tue, 31 Aug 2010 23:42:07 -0500
In-reply-to: <20100901031954.GP705@dastard>
References: <201009010130.41500@xxxxxx> <20100901000631.GO705@dastard> <201009010222.57350@xxxxxx> <20100901031954.GP705@dastard>
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Dave Chinner put forth on 8/31/2010 10:19 PM:
> On Wed, Sep 01, 2010 at 02:22:31AM +0200, Michael Monnerie wrote:
>>
>> This is a hexa-core AMD Phenom(tm) II X6 1090T Processor with up to 
>> 3.2GHz per core, so that shouldn't be
> 
> I'm getting a 8core/16thread server being CPU bound with multithreaded
> unlink workloads using delaylog, so it's entirely possible that all
> CPU cores are fully utilised on your machine.

What's your disk configuration on this 8 core machine?

Are you implying/stating that the performance of the disk subsystem is
irrelevant WRT multithreaded unlink workloads with delaylog enabled?

If so, this CPU hit you describe is specific to this workload scenario
only, not necessarily all your XFS test workloads, correct?

-- 
Stan

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