From: Christoph Hellwig <hch@infradead.org>
To: Justin Piszcz <jpiszcz@lucidpixels.com>
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 05:44:15 -0500 [thread overview]
Message-ID: <20081125104415.GA17304@infradead.org> (raw)
In-Reply-To: <alpine.DEB.1.10.0811250456010.16346@p34.internal.lan>
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?
next prev parent reply other threads:[~2008-11-25 10:44 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 [this message]
2008-11-25 10:46 ` Justin Piszcz
2008-11-25 18:39 ` Michael Tokarev
2008-11-25 21:03 ` Stian Jordet
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20081125104415.GA17304@infradead.org \
--to=hch@infradead.org \
--cc=ap@solarrain.com \
--cc=jpiszcz@lucidpixels.com \
--cc=linux-kernel@vger.kernel.org \
--cc=liste@jordet.net \
--cc=sandeen@sandeen.net \
--cc=xfs@oss.sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox