From: "Alan D. Brunelle" <Alan.Brunelle@hp.com>
To: "Alan D. Brunelle" <Alan.Brunelle@hp.com>
Cc: linux-kernel@vger.kernel.org, Jens Axboe <jens.axboe@oracle.com>,
npiggin@suse.de, dgc@sgi.com, arjan@linux.intel.com
Subject: Re: IO queueing and complete affinity w/ threads: Some results
Date: Tue, 12 Feb 2008 17:26:27 -0500 [thread overview]
Message-ID: <47B21D13.5060700@hp.com> (raw)
In-Reply-To: <47B218E9.7040405@hp.com>
Alan D. Brunelle wrote:
>
> Hopefully, the first column is self-explanatory - these are the settings applied to the queue_affinity, completion_affinity and rq_affinity tunables. Due to the fact that the standard deviations are so large coupled with the very close average results, I'm not seeing anything in this set of tests to favor any of the combinations...
>
Note quite:
Q or C = 0 really means Q or C set to -1 (default), Q or C = 1 means placing that thread on the CPU managing the IRQ. Sorry...
<sigh>
Alan
next prev parent reply other threads:[~2008-02-12 22:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-11 20:56 IO queueing and complete affinity w/ threads: Some results Alan D. Brunelle
2008-02-12 20:56 ` Alan D. Brunelle
2008-02-12 22:08 ` Alan D. Brunelle
2008-02-12 22:26 ` Alan D. Brunelle [this message]
2008-02-13 15:35 ` Alan D. Brunelle
2008-02-14 15:36 ` Alan D. Brunelle
2008-02-18 12:37 ` Jens Axboe
2008-02-18 13:33 ` Andi Kleen
2008-02-18 14:16 ` Jens Axboe
2008-02-19 1:49 ` Nick Piggin
2008-02-19 21:14 ` Paul Jackson
2008-02-19 21:31 ` Mike Travis
2008-02-20 8:08 ` Jens Axboe
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