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From: Jens Axboe <axboe@suse.de>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Time sliced cfq with basic io priorities
Date: Tue, 14 Dec 2004 14:37:25 +0100	[thread overview]
Message-ID: <20041214133725.GG3157@suse.de> (raw)
In-Reply-To: <20041213175721.GA2721@suse.de>

Hi,

Version -12 has been uploaded. Changes:

- Small optimization to choose next request logic

- An idle queue that exited would waste time for the next process

- Request allocation changes. Should get a smooth stream for writes now,
  not as bursty as before. Also simplified the may_queue/check_waiters
  logic, rely more on the regular block rq allocation congestion and
  don't waste sys time doing multiple wakeups.

- Fix compilation on x86_64

No io priority specific fixes, the above are all to improve the cfq time
slicing.

For 2.6.10-rc3-mm1:

http://www.kernel.org/pub/linux/kernel/people/axboe/patches/v2.6/2.6.10-rc3-mm1/cfq-time-slices-12-2.6.10-rc3-mm1.gz

For 2.6-BK:

http://www.kernel.org/pub/linux/kernel/people/axboe/patches/v2.6/2.6.10-rc3/cfq-time-slices-12.gz

-- 
Jens Axboe


  reply	other threads:[~2004-12-14 13:37 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-13 12:50 [PATCH] Time sliced cfq with basic io priorities Jens Axboe
2004-12-13 13:09 ` Jens Axboe
2004-12-13 17:57   ` Jens Axboe
2004-12-14 13:37     ` Jens Axboe [this message]
2004-12-14 21:31       ` Paul E. McKenney
2004-12-15  6:36         ` Jens Axboe
2004-12-15 15:18           ` Paul E. McKenney

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