From: "Rémi Dewitte" <remi@gide.net>
To: Mark Shinwell <mshinwell@janestcapital.com>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Threads performance issue.
Date: Tue, 17 Feb 2009 10:09:25 +0100 [thread overview]
Message-ID: <2184b2340902170109g2027e998i3c73284042b4c7a2@mail.gmail.com> (raw)
In-Reply-To: <20090217085944.GC29651@janestcapital.com>
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You need to uncomment the line 107 with Thread calls so that it is
effectively linked to threads I think and see the difference !
I will try the profiling !
Rémi
On Tue, Feb 17, 2009 at 09:59, Mark Shinwell <mshinwell@janestcapital.com>wrote:
> 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
>
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next prev parent reply other threads:[~2009-02-17 9:09 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
2009-02-17 9:09 ` Rémi Dewitte [this message]
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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