From: Jean-Christophe Filliatre <filliatr@lri.fr>
To: Julien Michel <julien.michel@etu.univ-orleans.fr>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Unix module troubles & Time functions
Date: Tue, 18 Jul 2006 13:59:42 +0200 [thread overview]
Message-ID: <17596.52526.904011.898429@pc9-152.lri.fr> (raw)
In-Reply-To: <20060718121035.hy7o1wa1cmhus4g0@webmailetu.univ-orleans.fr>
Julien Michel writes:
> I would like to measure the time a function spends inside a Caml
> program, for performance purpose.
> I need a function with an accuracy of at least 1us.
> [...]
> Or generally speaking, does any other function exists to achieve such a
> measurement (accuracy about 1 us) ?
To do such a measurement, I'm using the Unix.times function, as
follows:
======================================================================
open Unix
let utime f x =
let u = (times()).tms_utime in
let y = f x in
let ut = (times()).tms_utime -. u in
(y,ut)
let print_utime f x =
let (y,ut) = utime f x in
Printf.printf "user time: %2.2f\n" ut;
y
======================================================================
Hope this helps,
--
Jean-Christophe Filliâtre (http://www.lri.fr/~filliatr)
next prev parent reply other threads:[~2006-07-18 11:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-18 10:10 Julien Michel
2006-07-18 11:59 ` Jean-Christophe Filliatre [this message]
2006-07-18 13:27 ` [Caml-list] " Julien Michel
2006-07-18 15:33 ` William D. Neumann
2006-07-19 10:03 Julien Michel
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