From: "Mark Shinwell" <mshinwell@janestcapital.com>
To: "Rémi Dewitte" <remi@gide.net>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Threads performance issue.
Date: Tue, 17 Feb 2009 08:59:44 +0000 [thread overview]
Message-ID: <20090217085944.GC29651@janestcapital.com> (raw)
In-Reply-To: <2184b2340902162340s540c5ac7g9f42b59d03f643cb@mail.gmail.com>
On Tue, Feb 17, 2009 at 08:40:11AM +0100, Rémi Dewitte wrote:
> I have made some further experiments.
> I have a functional version of the reading algorithm. I have the original
> imperative version of the algorithm.
> Either it is linked to thread (T) or not (X). Either it uses extlib (E) or
> not (X).
Using:
ocamlopt -o foo transf.ml
ocamlopt -thread -o foothread transf.ml unix.cmxa threads.cmxa
on local disk with a 24Mb, approx. 500,000-line CSV file, I only see a
minor slowdown with foothread as opposed to foo. (A minor slowdown would
inded be expected.) So I'm confused as to why your results are so
different.
You could use ocamlopt -p and run gprof on the resulting gmon.out file.
Mark
next prev parent reply other threads:[~2009-02-17 8:59 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-16 15:15 Rémi Dewitte
2009-02-16 15:28 ` [Caml-list] " Michał Maciejewski
2009-02-16 15:32 ` Rémi Dewitte
2009-02-16 15:42 ` David Allsopp
2009-02-16 16:07 ` Rémi Dewitte
2009-02-16 16:32 ` Sylvain Le Gall
2009-02-17 13:52 ` [Caml-list] " Frédéric Gava
2009-02-16 16:47 ` [Caml-list] " Yaron Minsky
2009-02-16 17:37 ` Rémi Dewitte
2009-02-17 7:40 ` Rémi Dewitte
2009-02-17 8:59 ` Mark Shinwell [this message]
2009-02-17 9:09 ` Rémi Dewitte
2009-02-17 9:53 ` Jon Harrop
2009-02-17 10:07 ` Sylvain Le Gall
2009-02-17 10:26 ` [Caml-list] " Mark Shinwell
2009-02-17 10:50 ` Rémi Dewitte
2009-02-17 10:56 ` Mark Shinwell
2009-02-17 11:33 ` Jon Harrop
2009-02-17 12:20 ` Yaron Minsky
2009-02-17 12:26 ` Rémi Dewitte
2009-02-17 17:14 ` Sylvain Le Gall
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