From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with SMTP id 4DBE56B003D for ; Thu, 5 Feb 2009 06:27:00 -0500 (EST) Received: by fk-out-0910.google.com with SMTP id z22so198398fkz.6 for ; Thu, 05 Feb 2009 03:26:58 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20090201130058.GA486@elte.hu> References: <8c5a844a0901220851g1c21169al4452825564487b9a@mail.gmail.com> <8c5a844a0901221500m7af8ff45v169b6523ad9d7ad3@mail.gmail.com> <20090122231358.GA27033@elte.hu> <8c5a844a0901230310h7aa1ec83h60817de2b36212d8@mail.gmail.com> <8c5a844a0901281331w4cea7ab2y305d5a1af96e313e@mail.gmail.com> <20090129141929.GP24391@elte.hu> <8c5a844a0902010319t20b853d0t6c156ecc84543f30@mail.gmail.com> <20090201130058.GA486@elte.hu> Date: Thu, 5 Feb 2009 13:26:58 +0200 Message-ID: <8c5a844a0902050326v2155dbeaq5449f1e373f4245d@mail.gmail.com> Subject: Re: [PATCH 2.6.28 1/2] memory: improve find_vma From: Daniel Lowengrub Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Ingo Molnar Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Sun, Feb 1, 2009 at 3:00 PM, Ingo Molnar wrote: > > you should time it: > > time ./mmap-perf > > and compare the before/after results. > > Ingo > I made a script that runs 'time ./mmap-perf' 100 times and outputs the average. The output on the standard kernel was: real: 1.022600 user: 0.135900 system: 0.852600 The output after the patch was: real: 0.815400 user: 0.113200 system: 0.622200 These results were consistent which isn't surprising considering the fact that they themselves are averages. What do you think? Daniel -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org