From: Matthew Wilcox <matthew@wil.cx>
To: J??rn Engel <joern@logfs.org>
Cc: Theodore Tso <tytso@mit.edu>,
Matthew Wilcox <willy@linux.intel.com>,
Jens Axboe <jens.axboe@oracle.com>,
Ric Wheeler <rwheeler@redhat.com>,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org
Subject: Re: Is TRIM/DISCARD going to be a performance problem?
Date: Mon, 11 May 2009 06:48:22 -0600 [thread overview]
Message-ID: <20090511124822.GD8112@parisc-linux.org> (raw)
In-Reply-To: <20090511124325.GC6585@logfs.org>
On Mon, May 11, 2009 at 02:43:25PM +0200, J??rn Engel wrote:
> Given the hardware braindamage it is relatively sane. As always, it
> would be much better to fix the problem and not add workarounds, but we
> seem to lack the gods favor this time around.
>
> Can't anyone explain to the SATA folks that a discard is much closer to
> a write than to a secure erase or some other rare and slow command?
I've heard the ATA committee are working on an NCQ version of TRIM.
Don't expect support soon.
--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
next prev parent reply other threads:[~2009-05-11 12:48 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-09 21:14 Is TRIM/DISCARD going to be a performance problem? Theodore Ts'o
2009-05-10 16:53 ` Jörn Engel
2009-05-11 8:37 ` Theodore Tso
2009-05-11 10:06 ` Jörn Engel
2009-05-11 10:18 ` Jens Axboe
2009-05-11 15:43 ` Jeff Garzik
2009-05-11 11:27 ` Theodore Tso
2009-05-11 12:09 ` Theodore Tso
2009-05-11 13:10 ` Greg Freemyer
2009-05-11 13:39 ` Matthew Wilcox
2009-05-11 14:27 ` Theodore Tso
2009-05-11 14:29 ` Ric Wheeler
2009-05-11 14:50 ` Theodore Tso
2009-05-11 14:58 ` Ric Wheeler
2009-05-11 15:00 ` Matthew Wilcox
2009-05-11 18:47 ` Greg Freemyer
2009-05-11 19:22 ` Andreas Dilger
2009-05-11 23:38 ` Neil Brown
2009-05-12 13:28 ` Greg Freemyer
2009-05-11 13:15 ` Ric Wheeler
2010-04-24 17:11 ` Phillip Susi
2009-05-11 12:43 ` Jörn Engel
2009-05-11 12:48 ` Matthew Wilcox [this message]
[not found] ` <f3177b9e0905111433i40e41c90r920d7ccf36442ffd@mail.gmail.com>
2009-05-11 22:03 ` Chris Worley
2009-05-11 16:30 ` Chris Worley
2009-05-11 8:12 ` Jens Axboe
2009-05-11 8:41 ` Theodore Tso
2009-05-11 8:49 ` Jens Axboe
2009-05-11 17:18 ` Chris Mason
2009-05-11 18:43 ` Matthew Wilcox
2009-05-11 18:53 ` Chris Mason
2009-05-11 19:19 ` Theodore Tso
2009-05-29 10:52 ` Florian Weimer
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