From: Jeffrey Siegal <jbs@quiotix.com>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Why is fsync so much slower than O_SYNC?
Date: Thu, 18 Mar 2004 08:36:02 -0800 [thread overview]
Message-ID: <4059CFF2.6060209@quiotix.com> (raw)
In-Reply-To: <20040318003335.6bf3eb41.akpm@osdl.org>
Some odd results on ext2 as well:
README: Make sure you have turned off hardware write caching (hdparm -W0
/dev/hda for IDE)
O_SYNC:
Creating
Starting
iter = 1000, latency = 8.419908ms
O_DSYNC:
Creating
Starting
iter = 1000, latency = 8.369892ms
fsync:
Creating
Starting
iter = 1000, latency = 13.191030ms
fdatasync:
Creating
Starting
iter = 1000, latency = 8.829373ms
prev parent reply other threads:[~2004-03-18 16:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-17 16:40 Why is fsync so much slower than O_SYNC? Jeffrey Siegal
2004-03-18 8:33 ` Andrew Morton
2004-03-18 15:42 ` Jeffrey Siegal
2004-03-18 17:07 ` Andrew Morton
2004-03-18 16:36 ` Jeffrey Siegal [this message]
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=4059CFF2.6060209@quiotix.com \
--to=jbs@quiotix.com \
--cc=akpm@osdl.org \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox