From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Massimo Cetra <mcetra@navynet.it>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Production comparison between 2.4.27 and 2.6.8.1
Date: Wed, 25 Aug 2004 12:28:10 +1000 [thread overview]
Message-ID: <412BF93A.6000902@yahoo.com.au> (raw)
In-Reply-To: <002401c489e4$d7903ec0$0600640a@guendalin>
Massimo Cetra wrote:
> Nick Piggin wrote:
>
>
>>>Is this issue being analyzed ?
>>>Should we hope in an improvement sometime?
>>>Or I'll have to use 2.4 to have good performance ?
>>>
>>
>>You booted with elevator=deadline and things still didn't
>>improve though, correct? If so, then the problem should be
>>found and fixed.
>
>
> Yes, that's correct.
> Thanks. I'll try next versions of kernel.
> I dont think 2.8.9-RC1 includes something regarding this issue.
>
OK, can you try testing different values of
/sys/block/???/queue/read_ahead_kb
and
/sys/block/???/queue/nr_requests
You should set '???' for all disks involved.
First, try setting read_ahead_kb to 0, then 256.
If those values don't change anything, set nr_requests to 1024.
next prev parent reply other threads:[~2004-08-25 2:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-21 17:25 Production comparison between 2.4.27 and 2.6.8.1 Massimo Cetra
2004-08-22 1:33 ` Nick Piggin
2004-08-22 15:43 ` Massimo Cetra
2004-08-22 16:54 ` Massimo Cetra
2004-08-23 11:46 ` Massimo Cetra
2004-08-24 2:05 ` Nick Piggin
2004-08-24 14:15 ` Massimo Cetra
2004-08-25 2:28 ` Nick Piggin [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-08-25 7:23 rwhron
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=412BF93A.6000902@yahoo.com.au \
--to=nickpiggin@yahoo.com.au \
--cc=linux-kernel@vger.kernel.org \
--cc=mcetra@navynet.it \
/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.