From: Justin Piszcz <jpiszcz@lucidpixels.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Eric Sandeen <sandeen@sandeen.net>,
Stian Jordet <liste@jordet.net>, Alan Piszcz <ap@solarrain.com>,
linux-kernel@vger.kernel.org, xfs@oss.sgi.com
Subject: Re: Extreme slowness with xfs [WAS: Re: Slowness with new pc]
Date: Tue, 25 Nov 2008 05:46:01 -0500 (EST) [thread overview]
Message-ID: <alpine.DEB.1.10.0811250544530.19316@p34.internal.lan> (raw)
In-Reply-To: <20081125104415.GA17304@infradead.org>
On Tue, 25 Nov 2008, Christoph Hellwig wrote:
> On Tue, Nov 25, 2008 at 04:56:24AM -0500, Justin Piszcz wrote:
>> barriers enabled:
>>
>> $ time bash -c 'tar xf linux-2.6.27.7.tar; sync'
>> block 573932: ** Block of NULs **
>> Total bytes read: 293857280 (281MiB, 1.9MiB/s)
>>
>> real 2m40.643s
>> user 0m0.194s
>> sys 0m1.541s
>>
>> barriers disabled:
>>
>> time bash -c 'tar xf linux-2.6.27.7.tar; sync'
>> block 573932: ** Block of NULs **
>> Total bytes read: 293857280 (281MiB, 11MiB/s)
>>
>> real 0m27.612s
>> user 0m0.182s
>> sys 0m1.617s
>
> That's worse than usual, and even the no-barriers numbers are still
> really bad. What kind of disk and controller is this? Did you
> try to disable the cache with hdparm and see what that gives?
>
WD 750G on ICH7
Device Model: WDC WD7500AAKS-00RBA0
00:1f.2 SATA controller: Intel Corporation 82801GR/GH (ICH7 Family) SATA
AHCI Controller (rev 01)
I've not tried playing with the cache.
Justin.
next prev parent reply other threads:[~2008-11-25 10:46 UTC|newest]
Thread overview: 18+ 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 22:25 ` Justin Piszcz
2008-11-24 0:19 ` Stian Jordet
2008-11-24 9:50 ` Justin Piszcz
2008-11-24 23:36 ` Stian Jordet
2008-11-24 23:52 ` Justin Piszcz
2008-11-25 0:09 ` Sven-Haegar Koch
2008-11-25 20:44 ` Stian Jordet
2008-11-25 21:22 ` Eric Sandeen
2008-11-25 21:51 ` Stian Jordet
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 [this message]
2008-11-25 18:39 ` Michael Tokarev
2008-11-25 21:03 ` Stian Jordet
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