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From: Stian Jordet <liste@jordet.net>
To: David Sparks <dave@ca.sophos.com>
Cc: "xfs@oss.sgi.com" <xfs@oss.sgi.com>
Subject: Re: Extreme slowness with xfs [WAS: Re: Slowness with new pc]
Date: Tue, 25 Nov 2008 23:31:08 +0100	[thread overview]
Message-ID: <1227652268.10741.3.camel@chevrolet> (raw)
In-Reply-To: <492C75E2.1080701@ca.sophos.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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  reply	other threads:[~2008-11-25 22:36 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-15 14:44 Slowness with new pc Stian Jordet
2008-11-18 13:51 ` Sergio Luis
2008-11-23 21:48   ` Extreme slowness with xfs [WAS: Re: Slowness with new pc] Stian Jordet
2008-11-23 21:48     ` Stian Jordet
2008-11-23 22:25     ` Justin Piszcz
2008-11-23 22:25       ` Justin Piszcz
2008-11-24  0:19       ` Stian Jordet
2008-11-24  0:19         ` Stian Jordet
2008-11-24  9:50         ` Justin Piszcz
2008-11-24  9:50           ` Justin Piszcz
2008-11-24 23:36           ` Stian Jordet
2008-11-24 23:36             ` Stian Jordet
2008-11-24 23:52             ` Justin Piszcz
2008-11-24 23:52               ` Justin Piszcz
2008-11-25  0:09             ` Sven-Haegar Koch
2008-11-25  0:09               ` Sven-Haegar Koch
2008-11-25 20:44               ` Stian Jordet
2008-11-25 20:44                 ` Stian Jordet
2008-11-25 21:22                 ` Eric Sandeen
2008-11-25 21:22                   ` Eric Sandeen
2008-11-25 21:51                   ` Stian Jordet
2008-11-25 22:02                     ` David Sparks
2008-11-25 22:31                       ` Stian Jordet [this message]
2008-11-25  1:36             ` Eric Sandeen
2008-11-25  1:36               ` Eric Sandeen
2008-11-25  9:56               ` Justin Piszcz
2008-11-25 10:44                 ` Christoph Hellwig
2008-11-25 10:46                   ` Justin Piszcz
2008-11-25 18:39                 ` Michael Tokarev
2008-11-25 21:03               ` Stian Jordet
2008-11-26 12:30                 ` Martin Steigerwald
2008-11-26 21:43                   ` Dave Chinner

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