From: piotr@larroy.com (Pedro Larroy)
To: linux-kernel@vger.kernel.org
Subject: CFQ iosched praise: good perfomance and better latency
Date: Mon, 19 Apr 2004 02:56:51 +0200 [thread overview]
Message-ID: <20040419005651.GA7860@larroy.com> (raw)
Hi
I've been trying CFQ ioscheduler in my software raid5 with nice results,
I've observed that a latency pattern still exists, just as in the
anticipatory ioscheduler, but those spikes are now much lower (from
6ms with AS to 2ms with CFQ as seen in the bottom of
http://pedro.larroy.com/devel/iolat/analisys/),
plus apps seems to get a fair amount of io so they don't get starved.
Seems a good choice for io loaded boxes. Thanks Jens Axboe.
Regards.
--
Pedro Larroy Tovar | Linux & Network consultant | piotr%member.fsf.org
Software patents are a threat to innovation in Europe please check:
http://www.eurolinux.org/
next reply other threads:[~2004-04-19 0:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-19 0:56 Pedro Larroy [this message]
2004-04-19 5:10 ` CFQ iosched praise: good perfomance and better latency Nick Piggin
2004-04-19 5:57 ` Andrew Morton
2004-04-19 6:12 ` Nick Piggin
2004-04-19 11:32 ` Pedro Larroy
2004-04-19 11:53 ` Nick Piggin
2004-04-19 23:59 ` Pedro Larroy
2004-04-19 13:27 ` Daniel Pittman
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