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Subject: Re: Extreme slowness with xfs [WAS: Re: Slowness with new pc]
From: Stian Jordet <liste@jordet.net>
In-Reply-To: <492C75E2.1080701@ca.sophos.com>
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Date: Tue, 25 Nov 2008 23:31:08 +0100
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To: David Sparks <dave@ca.sophos.com>
Cc: "xfs@oss.sgi.com" <xfs@oss.sgi.com>

ti., 25.11.2008 kl. 14.02 -0800, skrev David Sparks:
> > With no barriers, it's 22s faster than my workstation. That can't be the
> > way it's supposed to be?
> 
> What IO elevator are you using?  Did you try the 'noop' or 'deadline' schedulers?
> 
> cat /sys/block/sda/queue/scheduler
> echo noop > /sys/block/sda/queue/scheduler

That improved the time 10s (noop and deadline both finished at 46s,
while cfq (still) uses 59...

Still slower than my laptop... (ok, I do understand that this is a very
static benchmark, that really doesn't say anything about real life
performance. But "everyone" unpacks the kernel faster than I, on a brand
new system worth $3500USD...

Thanks :)

-Stian

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