From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from majordomo@localhost) by pauillac.inria.fr (8.7.6/8.7.3) id NAA03084; Wed, 26 Nov 2003 13:23:29 +0100 (MET) X-Authentication-Warning: pauillac.inria.fr: majordomo set sender to owner-caml-list@pauillac.inria.fr using -f Received: from nez-perce.inria.fr (nez-perce.inria.fr [192.93.2.78]) by pauillac.inria.fr (8.7.6/8.7.3) with ESMTP id NAA02830 for ; Wed, 26 Nov 2003 13:23:28 +0100 (MET) Received: from oxy.exomi.com (ua199d87hel.dial.kolumbus.fi [212.54.23.199]) by nez-perce.inria.fr (8.11.1/8.11.1) with ESMTP id hAQCNQ110660; Wed, 26 Nov 2003 13:23:27 +0100 (MET) Received: by oxy.exomi.com (Postfix, from userid 501) id DF0DCB89D4; Wed, 26 Nov 2003 14:23:32 +0200 (EET) Date: Wed, 26 Nov 2003 14:23:32 +0200 From: Ville-Pertti Keinonen To: Xavier Leroy Cc: Daniel =?iso-8859-1?Q?B=FCnzli?= , caml-list@inria.fr Subject: Re: [Caml-list] Profiling a function execution Message-ID: <20031126122332.GA761@exomi.com> Mail-Followup-To: Xavier Leroy , Daniel =?iso-8859-1?Q?B=FCnzli?= , caml-list@inria.fr References: <81F621FD-1629-11D8-A1E1-000393DBC266@epfl.ch> <20031125190553.B1064@pauillac.inria.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031125190553.B1064@pauillac.inria.fr> User-Agent: Mutt/1.4.1i X-Loop: caml-list@inria.fr X-Spam: no; 0.00; caml-list:01 kernels:01 syscall:01 exploited:01 derivatives:01 darwin:01 posix:01 ifdef:01 kernel:01 nov:01 unix:02 wrote:03 portability:03 macos:04 suspect:05 Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk On Tue, Nov 25, 2003 at 07:05:53PM +0100, Xavier Leroy wrote: > At least under Linux, getrusage() doesn't provide more accuracy than > times(), since the kernel maintains user and system time as an > integral number of clock ticks. I haven't looked at other Unix > kernels, but I suspect that the additional precision made possible by > the getrusage() syscall is simply not exploited. 4.4 BSD derivatives (except Darwin/MacOS X). O^HD^HTru64. > (Besides, times() is part of the POSIX standard while getrusage() is not, > meaning less portability.) You can always use something like #ifdef HAS_GETRUSAGE ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners