From: Jamie Lokier <jamie@shareable.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: Theodore Tso <tytso@mit.edu>, Eric Sandeen <sandeen@redhat.com>,
Alexey Zaytsev <alexey.zaytsev@gmail.com>,
linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Rik van Riel <riel@surriel.com>
Subject: Re: Mentor for a GSoC application wanted (Online ext2/3 filesystem checker)
Date: Mon, 21 Apr 2008 00:42:42 +0100 [thread overview]
Message-ID: <20080420234241.GB23292@shareable.org> (raw)
In-Reply-To: <87iqyc85q7.fsf@basil.nowhere.org>
Andi Kleen wrote:
> [LVM] always disables barriers if you don't apply a so far unmerged
> patch that enables them in some special circumstances (only single
> backing device)
(I continue to be surprised at the un-safety of Linux fsync)
> Not having barriers sometimes makes your workloads faster (and less
> safe) and in other cases slower.
I'm curious, how does it make them slower? Merely not issuing barrier
calls seems like it will always be the same speed or faster.
Thanks,
-- Jamie
next prev parent reply other threads:[~2008-04-20 23:42 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-18 14:20 Mentor for a GSoC application wanted (Online ext2/3 filesystem checker) Alexey Zaytsev
2008-04-19 1:29 ` Theodore Tso
2008-04-19 9:44 ` Alexey Zaytsev
2008-04-19 18:56 ` Theodore Tso
2008-04-19 19:07 ` Eric Sandeen
2008-04-19 22:04 ` Theodore Tso
2008-04-20 1:24 ` Eric Sandeen
2008-04-20 23:30 ` Andi Kleen
2008-04-20 23:42 ` Jamie Lokier [this message]
2008-04-21 8:01 ` Andi Kleen
2008-04-21 8:01 ` Andi Kleen
2008-04-21 11:51 ` Jamie Lokier
2008-04-21 17:29 ` Ricardo M. Correia
2008-04-21 17:40 ` Andi Kleen
2008-04-21 18:27 ` Ricardo M. Correia
2008-04-22 14:48 ` Jamie Lokier
2008-04-21 18:15 ` Ric Wheeler
2008-04-21 18:25 ` Eric Sandeen
2008-04-21 18:44 ` Ric Wheeler
2008-04-21 18:58 ` Matthew Wilcox
2008-04-21 19:11 ` Ric Wheeler
2008-04-21 0:27 ` Alexey Zaytsev
2008-04-21 9:45 ` Andi Kleen
2008-04-22 16:54 ` Peter Teoh
2008-04-22 17:02 ` Eric Sandeen
2008-04-22 23:37 ` Andreas Dilger
2008-04-23 0:52 ` Eric Sandeen
[not found] ` <480E4950.1090300@oracle.com>
[not found] ` <804dabb00804221633g1f61029dh7b27737134fc0b7a@mail.gmail.com>
[not found] ` <480E7954.9090408@oracle.com>
2008-04-23 1:02 ` Peter Teoh
2008-04-20 23:37 ` Andi Kleen
2008-04-21 2:33 ` Theodore Tso
2008-04-21 14:43 ` Andi Kleen
2008-04-21 0:23 ` Alexey Zaytsev
2008-04-21 12:53 ` Theodore Tso
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=20080420234241.GB23292@shareable.org \
--to=jamie@shareable.org \
--cc=alexey.zaytsev@gmail.com \
--cc=andi@firstfloor.org \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=riel@surriel.com \
--cc=sandeen@redhat.com \
--cc=tytso@mit.edu \
/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.