From: Avi Kivity <avi@qumranet.com>
To: Jens Axboe <jens.axboe@oracle.com>
Cc: Paolo Valente <paolo.valente@unimore.it>,
Pavel Machek <pavel@ucw.cz>,
linux-kernel@vger.kernel.org
Subject: Re: [RESEND][RFC] BFQ I/O Scheduler
Date: Thu, 17 Apr 2008 18:19:51 +0300 [thread overview]
Message-ID: <48076A97.9060003@qumranet.com> (raw)
In-Reply-To: <20080417083047.GV12774@kernel.dk>
Jens Axboe wrote:
> I was thinking about that too. Generally I've been opposed to doing
> scheduling decisions on anything but time, since that is always
> relevant. When to hand out slices and to what process, that algorithm is
> really basic in CFQ and could do with an improvement.
>
Jumping in at random, does "process" here mean task or mms_struct? If
the former, doesn't that mean that a 100-thread process can starve out a
single-threaded process?
Perhaps we need hierarchical io scheduling, like cfs has for the cpu.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2008-04-17 15:20 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-01 15:29 [RESEND][RFC] BFQ I/O Scheduler Fabio Checconi
2008-04-15 8:22 ` Jens Axboe
2008-04-15 9:11 ` Fabio Checconi
2008-04-15 12:42 ` Jens Axboe
2008-04-15 18:08 ` Fabio Checconi
2008-04-16 6:48 ` Paolo Valente
2008-04-18 1:26 ` Aaron Carroll
2008-04-16 18:44 ` Pavel Machek
2008-04-17 6:14 ` Paolo Valente
2008-04-17 7:10 ` Jens Axboe
2008-04-17 8:26 ` Paolo Valente
2008-04-17 8:30 ` Jens Axboe
2008-04-17 9:24 ` Paolo Valente
2008-04-17 9:27 ` Jens Axboe
2008-04-17 10:19 ` Aaron Carroll
2008-04-17 10:21 ` Jens Axboe
2008-04-17 11:30 ` Fabio Checconi
2008-04-17 15:19 ` Avi Kivity [this message]
2008-04-17 15:47 ` Paolo Valente
2008-04-17 15:51 ` Avi Kivity
2008-04-17 18:12 ` Paolo Valente
2008-04-17 23:44 ` Aaron Carroll
2008-04-17 10:24 ` Aaron Carroll
2008-04-17 11:14 ` Fabio Checconi
2008-04-17 12:14 ` Aaron Carroll
2008-04-17 13:54 ` Jens Axboe
2008-04-17 15:18 ` Paolo Valente
2008-04-17 8:48 ` Pavel Machek
2008-04-17 8:57 ` Jens Axboe
2008-04-17 9:14 ` Fabio Checconi
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