From: Peter Zaitsev <peter@mysql.com>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Andrew Morton <akpm@osdl.org>,
alexeyk@mysql.com, linuxram@us.ibm.com,
linux-kernel@vger.kernel.org, axboe@suse.de
Subject: Re: Random file I/O regressions in 2.6
Date: Thu, 06 May 2004 18:29:37 -0700 [thread overview]
Message-ID: <1083893376.2420.194.camel@abyss.local> (raw)
In-Reply-To: <409ACF04.8010805@yahoo.com.au>
On Thu, 2004-05-06 at 16:49, Nick Piggin wrote:
> >
> > `nomtime' would be simpler and safer to implement, but not as nice.
> >
> > But we need those numbers first. I'll take a look.
> >
>
> Can they use fdatasync? Does it do the right thing on Linux?
Nick,
You're right. fdatasync suppose to be solution in this case and actually
test supports this mode as well as MySQL does :)
On other hand if you rather use O_DSYNC it does not seems to work being
mapped to O_SYNC.
But the thing I'm mostly interested in is O_DIRECT. It seems to be the
best solution for many database needs, especially used together with
asynchronous IO. There is however no matching option which should not
flush MetaData.
--
Peter Zaitsev, Senior Support Engineer
MySQL AB, www.mysql.com
next prev parent reply other threads:[~2004-05-07 1:29 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-02 19:57 Random file I/O regressions in 2.6 Alexey Kopytov
2004-05-03 11:14 ` Nick Piggin
2004-05-03 18:08 ` Andrew Morton
2004-05-03 20:22 ` Ram Pai
2004-05-03 20:57 ` Andrew Morton
2004-05-03 21:37 ` Peter Zaitsev
2004-05-03 21:50 ` Ram Pai
2004-05-03 22:01 ` Peter Zaitsev
2004-05-03 21:59 ` Andrew Morton
2004-05-03 22:07 ` Ram Pai
2004-05-03 23:58 ` Nick Piggin
2004-05-04 0:10 ` Andrew Morton
2004-05-04 0:19 ` Nick Piggin
2004-05-04 0:50 ` Ram Pai
2004-05-04 6:29 ` Andrew Morton
2004-05-04 15:03 ` Ram Pai
2004-05-04 19:39 ` Ram Pai
2004-05-04 19:48 ` Andrew Morton
2004-05-04 19:58 ` Ram Pai
2004-05-04 21:51 ` Ram Pai
2004-05-04 22:29 ` Ram Pai
2004-05-04 23:01 ` Alexey Kopytov
2004-05-04 23:20 ` Andrew Morton
2004-05-05 22:04 ` Alexey Kopytov
2004-05-06 8:43 ` Andrew Morton
2004-05-06 18:13 ` Peter Zaitsev
2004-05-06 21:49 ` Andrew Morton
2004-05-06 23:49 ` Nick Piggin
2004-05-07 1:29 ` Peter Zaitsev [this message]
2004-05-10 19:50 ` Ram Pai
2004-05-10 20:21 ` Andrew Morton
2004-05-10 22:39 ` Ram Pai
2004-05-10 23:07 ` Andrew Morton
2004-05-11 20:51 ` Ram Pai
2004-05-11 21:17 ` Andrew Morton
2004-05-13 20:41 ` Ram Pai
2004-05-17 17:30 ` Random file I/O regressions in 2.6 [patch+results] Ram Pai
2004-05-20 1:06 ` Alexey Kopytov
2004-05-20 1:31 ` Ram Pai
2004-05-21 19:32 ` Alexey Kopytov
2004-05-20 5:49 ` Andrew Morton
2004-05-20 21:59 ` Andrew Morton
2004-05-20 22:23 ` Andrew Morton
2004-05-21 7:31 ` Nick Piggin
2004-05-21 7:50 ` Jens Axboe
2004-05-21 8:40 ` Nick Piggin
2004-05-21 8:56 ` Spam: " Andrew Morton
2004-05-21 22:24 ` Alexey Kopytov
2004-05-21 21:13 ` Alexey Kopytov
2004-05-26 4:43 ` Alexey Kopytov
2004-05-11 22:26 ` Random file I/O regressions in 2.6 Bill Davidsen
2004-05-04 1:15 ` Andrew Morton
2004-05-04 11:39 ` Nick Piggin
2004-05-04 8:27 ` Arjan van de Ven
2004-05-04 8:47 ` Andrew Morton
2004-05-04 8:50 ` Arjan van de Ven
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=1083893376.2420.194.camel@abyss.local \
--to=peter@mysql.com \
--cc=akpm@osdl.org \
--cc=alexeyk@mysql.com \
--cc=axboe@suse.de \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxram@us.ibm.com \
--cc=nickpiggin@yahoo.com.au \
/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