From: Christoph Hellwig <hch@infradead.org>
To: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
Cc: linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk,
LKML <linux-kernel@vger.kernel.org>,
matthew@wil.cx
Subject: Re: Why is O_DSYNC on linux so slow / what's wrong with my SSD?
Date: Wed, 20 Nov 2013 04:54:46 -0800 [thread overview]
Message-ID: <20131120125446.GA6284@infradead.org> (raw)
In-Reply-To: <528CA73B.9070604@profihost.ag>
On Wed, Nov 20, 2013 at 01:12:43PM +0100, Stefan Priebe - Profihost AG wrote:
> Can anyone explain to me why O_DSYNC for my app on linux is so slow?
Because FreeBSD ignores O_DSYNC on block devices, it never sends a FLUSH
to the device.
next prev parent reply other threads:[~2013-11-20 12:54 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-20 12:12 Why is O_DSYNC on linux so slow / what's wrong with my SSD? Stefan Priebe - Profihost AG
2013-11-20 12:54 ` Christoph Hellwig [this message]
2013-11-20 13:34 ` Chinmay V S
2013-11-20 13:38 ` Christoph Hellwig
2013-11-20 14:12 ` Stefan Priebe - Profihost AG
2013-11-20 15:22 ` Chinmay V S
2013-11-20 15:37 ` Theodore Ts'o
2013-11-20 15:55 ` J. Bruce Fields
2013-11-20 17:11 ` Chinmay V S
2013-11-20 17:58 ` J. Bruce Fields
2013-11-20 18:43 ` Chinmay V S
2013-11-21 10:11 ` Christoph Hellwig
2013-11-22 20:01 ` Stefan Priebe
2013-11-22 20:37 ` Ric Wheeler
2013-11-22 21:05 ` Stefan Priebe
2013-11-23 18:27 ` Stefan Priebe
2013-11-23 19:35 ` Ric Wheeler
2013-11-23 19:48 ` Stefan Priebe
2013-11-25 7:37 ` Stefan Priebe
2020-01-08 6:58 ` slow sync performance on LSI / Broadcom MegaRaid performance with battery cache Stefan Priebe - Profihost AG
2013-11-22 19:57 ` Why is O_DSYNC on linux so slow / what's wrong with my SSD? Stefan Priebe
2013-11-24 0:10 ` One Thousand Gnomes
2013-11-20 16:02 ` Howard Chu
2013-11-23 20:36 ` Pavel Machek
2013-11-23 23:01 ` Ric Wheeler
2013-11-24 0:22 ` Pavel Machek
2013-11-24 1:03 ` One Thousand Gnomes
2013-11-24 2:43 ` Ric Wheeler
2013-11-22 19:55 ` Stefan Priebe
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=20131120125446.GA6284@infradead.org \
--to=hch@infradead.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=matthew@wil.cx \
--cc=s.priebe@profihost.ag \
--cc=viro@zeniv.linux.org.uk \
/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.