From: Matthew Wilcox <matthew@wil.cx>
To: Jens Axboe <jens.axboe@oracle.com>
Cc: Boaz Harrosh <bharrosh@panasas.com>,
Ric Wheeler <ricwheeler@gmail.com>,
linux-scsi@vger.kernel.org
Subject: Re: [DO NOT APPLY] sd take advantage of rotation speed
Date: Wed, 25 Jun 2008 11:20:15 -0600 [thread overview]
Message-ID: <20080625172015.GR4392@parisc-linux.org> (raw)
In-Reply-To: <20080625165759.GC20851@kernel.dk>
On Wed, Jun 25, 2008 at 06:57:59PM +0200, Jens Axboe wrote:
> Precisely, merging and fairness is a big part of it. Plus, doing this in
> sd is just a blatant layer violation.
I'm fine with tweaking the elevators to know about low-latency seeks.
But please stop describing it as "a blatant layering violation".
It's nothing of the sort. It's setting a default at a point where we
find out the information which would guide us.
I haven't looked into doing this in udev yet; I've got caught up in
another project. In any case, it seems like there's no role for udev
any more, so I'll probably not spend any more time on this unless there's
some need.
--
Intel are signing my paycheques ... these opinions are still mine
"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:[~2008-06-25 17:20 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-19 16:03 [DO NOT APPLY] sd take advantage of rotation speed Matthew Wilcox
2008-06-19 17:12 ` Mike Anderson
2008-06-19 18:10 ` Matthew Wilcox
2008-06-22 12:16 ` Boaz Harrosh
2008-06-22 13:19 ` Matthew Wilcox
2008-06-22 13:27 ` Boaz Harrosh
2008-06-22 13:38 ` James Bottomley
2008-06-22 14:03 ` Matthew Wilcox
2008-06-22 14:41 ` Martin K. Petersen
2008-06-22 18:44 ` Matthew Wilcox
2008-06-25 2:06 ` Martin K. Petersen
2008-06-22 17:26 ` James Bottomley
2008-06-25 13:47 ` Jens Axboe
2008-06-25 13:57 ` Jens Axboe
2008-06-25 14:24 ` Ric Wheeler
2008-06-25 16:25 ` Boaz Harrosh
2008-06-25 16:57 ` Jens Axboe
2008-06-25 17:20 ` Matthew Wilcox [this message]
2008-06-25 17:26 ` Jens Axboe
2008-06-25 17:34 ` Matthew Wilcox
2008-06-25 17:43 ` James Bottomley
2008-06-25 17:53 ` Matthew Wilcox
2008-06-25 18:01 ` Jens Axboe
2008-06-25 18:06 ` James Bottomley
2008-06-25 17:59 ` Jens Axboe
2008-06-25 18:06 ` Martin K. Petersen
2008-06-25 18:12 ` Jens Axboe
2008-07-28 13:36 ` Ric Wheeler
2008-07-28 14:10 ` James Bottomley
2008-07-28 14:31 ` Martin K. Petersen
2008-07-31 21:00 ` Grant Grundler
2008-07-31 21:19 ` Andrew Patterson
2008-07-31 22:26 ` Ric Wheeler
2008-07-31 23:44 ` Grant Grundler
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