From: "Eric D. Mudama" <edmudama@mail.bounceswoosh.org>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: linux-kernel@vger.kernel.org,
"Eric D. Mudama" <edmudama@mail.bounceswoosh.org>,
Jens Axboe <axboe@suse.de>,
Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>,
Ed Tomlinson <edt@aei.ca>, Andrew Morton <akpm@osdl.org>
Subject: Re: flush cache range proposal (was Re: ide errors in 7-rc1-mm1 and later)
Date: Thu, 10 Jun 2004 14:33:50 -0600 [thread overview]
Message-ID: <20040610203350.GB2230@bounceswoosh.org> (raw)
In-Reply-To: <40C8A241.50608@pobox.com>
On Thu, Jun 10 at 14:02, Jeff Garzik wrote:
>Oh, also:
>
>We'll need to write up precisely _why_ this is used, and give some
>examples of usage, for people reading the proposal (mostly T13-ish
>people) who have not been following the lkml barrier discussion closely.
One comment...
There will need to be queued versions of this command, both legacy
and first-party, since a flush cache command will abort an outstanding
queue with error.
Second, I'm trying to figure out exactly how this might be used...
Would the driver just send down alternating write/flushregion commands
queued? If that is the case, the drive will offer 2x the queue depth
(maybe 30% more performance) doing pure WRITE DMA QUEUED FUA (FP)
commands, wouldn't it? Then again, for a metadata-only journaling
system, this would give you almost 100% of raw performance, with
metadata reliability which means you could always boot the drive.
I'm not sure what percentage of the writes to the filesystem one might
envision doing with this system...
--eric
--
Eric D. Mudama
edmudama@mail.bounceswoosh.org
next prev parent reply other threads:[~2004-06-10 20:30 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-27 20:24 [2.6.7-rc1-mm1] cant mount reiserfs using -o barrier=flush Günther Persoons
2004-05-27 23:28 ` Ed Tomlinson
2004-05-28 11:54 ` Gunther Persoons
2004-05-28 12:18 ` Jens Axboe
2004-05-28 21:39 ` Ed Tomlinson
2004-05-29 8:30 ` Jens Axboe
2004-06-04 2:07 ` ide errors in 7-rc1-mm1 and later Ed Tomlinson
2004-06-04 2:31 ` Andrew Morton
2004-06-04 9:42 ` Jens Axboe
2004-06-04 11:22 ` Ed Tomlinson
2004-06-04 11:32 ` Jens Axboe
2004-06-04 11:45 ` Jens Axboe
2004-06-04 11:57 ` Bartlomiej Zolnierkiewicz
2004-06-04 12:01 ` Jens Axboe
2004-06-04 12:38 ` Bartlomiej Zolnierkiewicz
2004-06-04 12:47 ` Jens Axboe
2004-06-04 13:34 ` Bartlomiej Zolnierkiewicz
2004-06-04 15:23 ` Jens Axboe
2004-06-04 16:14 ` Bartlomiej Zolnierkiewicz
2004-06-05 9:18 ` Jens Axboe
2004-06-09 21:52 ` Bartlomiej Zolnierkiewicz
2004-06-09 22:06 ` Andrew Morton
2004-06-09 23:38 ` Bartlomiej Zolnierkiewicz
2004-06-09 23:50 ` Andrew Morton
2004-06-10 0:20 ` Bartlomiej Zolnierkiewicz
2004-06-10 0:37 ` Andrew Morton
2004-06-10 1:02 ` Bartlomiej Zolnierkiewicz
2004-06-10 0:28 ` Chris Mason
2004-06-10 0:38 ` Andrew Morton
2004-06-10 0:45 ` Bartlomiej Zolnierkiewicz
2004-06-10 15:14 ` Chris Mason
2004-06-10 15:15 ` Jens Axboe
2004-06-10 1:05 ` Bartlomiej Zolnierkiewicz
2004-06-10 6:27 ` Jens Axboe
2004-06-10 6:26 ` Jens Axboe
2004-06-04 17:29 ` Jeff Garzik
2004-06-05 9:24 ` Jens Axboe
2004-06-06 16:18 ` Eric D. Mudama
2004-06-06 20:46 ` Jens Axboe
2004-06-10 0:38 ` Bartlomiej Zolnierkiewicz
2004-06-10 6:11 ` Jens Axboe
2004-06-10 16:41 ` Eric D. Mudama
2004-06-10 17:50 ` flush cache range proposal (was Re: ide errors in 7-rc1-mm1 and later) Jeff Garzik
2004-06-10 18:02 ` Jeff Garzik
2004-06-10 20:33 ` Eric D. Mudama [this message]
2004-06-11 16:22 ` Jeff Garzik
2004-06-11 7:55 ` Jens Axboe
2004-06-11 16:17 ` Eric D. Mudama
2004-06-11 16:31 ` Jeff Garzik
2004-06-11 16:52 ` Eric D. Mudama
2004-06-11 16:58 ` Jens Axboe
2004-06-11 16:54 ` Jens Axboe
2004-06-11 16:50 ` Jens Axboe
2004-06-11 16:24 ` Jeff Garzik
2004-06-11 6:10 ` Stuart Young
2004-06-26 8:31 ` ide errors in 7-rc1-mm1 and later Andre Hedrick
2004-06-26 8:58 ` Andre Hedrick
2004-06-28 18:18 ` Eric D. Mudama
2004-07-02 8:29 ` Jens Axboe
2004-07-07 5:40 ` Jeff Garzik
2004-06-04 11:48 ` Bartlomiej Zolnierkiewicz
2004-06-09 23:44 ` Ed Tomlinson
2004-06-09 23:52 ` Andrew Morton
2004-06-10 0:17 ` Ed Tomlinson
2004-06-10 6:29 ` Jens Axboe
2004-06-14 21:42 ` Ed Tomlinson
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=20040610203350.GB2230@bounceswoosh.org \
--to=edmudama@mail.bounceswoosh.org \
--cc=B.Zolnierkiewicz@elka.pw.edu.pl \
--cc=akpm@osdl.org \
--cc=axboe@suse.de \
--cc=edt@aei.ca \
--cc=jgarzik@pobox.com \
--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
all inboxes | Powered by JetHome®