Re: sbp2 serialize_io harmful when

From: Stefan Richter <stefanr_at_s5r6.in-berlin.de>
Date: Fri 17 Sep 2004 - 21:55:45 CEST
Message-ID: <69b288d3e26ddcf0ff4a90373bad6832@localhost>

Pat LaVarre wrote:
> As yet in 2.6 I see both compatibility and thruput harmed unless
> I specify serialize_io.
...
> With serialize_io=1: 27.9 MB/s reading in, 20.6 MB/s writing out
> Without serialize_io: 18.0 MB/s reading in, 20.1 MB/s writing out

This is interesting. I am not sure when I benchmarked that the last
time. It may still have been under kernel 2.4. I will measure it
again as soon as I can spare equipment and time.

-- 
Stefan Richter
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Received on Fri Sep 17 22:11:28 2004

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