From: Jens Axboe <axboe@suse.de>
To: Andrew Morton <akpm@digeo.com>
Cc: Joel.Becker@oracle.com, linux-kernel@vger.kernel.org
Subject: Re: WimMark I report for 2.5.65-mm2
Date: Thu, 20 Mar 2003 09:29:47 +0100 [thread overview]
Message-ID: <20030320082947.GM4990@suse.de> (raw)
In-Reply-To: <20030320002050.44f13857.akpm@digeo.com>
On Thu, Mar 20 2003, Andrew Morton wrote:
> Jens Axboe <axboe@suse.de> wrote:
> >
> > Besides, deadline is still the most solid choice.
>
> Deadline will always be the best choice for OLTP workloads. Or CFQ - it
> should perform the same.
>
> All this workload does is seeks all over the disk doing teeny synchronous
> I/O's. It is the worst-case for AS.
>
> What we are trying to do at present is to make AS not _too_ bad for these
> workloads so that people with mixed workloads or who are not familiar with
> kernel arcanery don't accidentally end up with something which is
> significantly slower than it should be.
>
> It is an interesting test case.
I understand that. A deadline run is still interesting if there are
regressions from -mm2 to -mm3, for example. If deadline shows the same
regression, it's likely not a newly introduced AS bug.
--
Jens Axboe
next prev parent reply other threads:[~2003-03-20 8:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-19 23:28 WimMark I report for 2.5.65-mm2 Joel Becker
2003-03-20 1:57 ` Andrew Morton
2003-03-20 0:38 ` Joel Becker
2003-03-20 0:55 ` Nick Piggin
2003-03-20 8:04 ` Jens Axboe
2003-03-20 8:20 ` Andrew Morton
2003-03-20 8:29 ` Jens Axboe [this message]
2003-03-20 15:01 ` Nick Piggin
2003-03-20 18:32 ` Joel Becker
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=20030320082947.GM4990@suse.de \
--to=axboe@suse.de \
--cc=Joel.Becker@oracle.com \
--cc=akpm@digeo.com \
--cc=linux-kernel@vger.kernel.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.