From: "Frédéric Gava" <gava@univ-paris12.fr>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Re: Threads performance issue.
Date: Tue, 17 Feb 2009 14:52:44 +0100 [thread overview]
Message-ID: <499AC12C.4030600@univ-paris12.fr> (raw)
In-Reply-To: <slrngpj59q.e8q.sylvain@gallu.homelinux.org>
>> I would like to read two files in two different threads.
>>
>> I have made a first version reading the first then the second and it takes
>> 2.8s (native).
>>
>> I decided to make a threaded version and before any use of thread I realize=
>> d
>> that just linking no even using it to the threads library makes my first
>> version of the program to run in 12s !
This kind of trick can work when files are on different discs due to two
I/O calls (even using blocking reading). But in a single thread using
non-blocking reading should also work but it is more difficult to write.
FG
next prev parent reply other threads:[~2009-02-17 13:52 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 ` Frédéric Gava [this message]
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
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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