From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261638AbUG1SXH (ORCPT ); Wed, 28 Jul 2004 14:23:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261685AbUG1SXH (ORCPT ); Wed, 28 Jul 2004 14:23:07 -0400 Received: from main.gmane.org ([80.91.224.249]:36009 "EHLO main.gmane.org") by vger.kernel.org with ESMTP id S261638AbUG1SXF (ORCPT ); Wed, 28 Jul 2004 14:23:05 -0400 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: linux-kernel@vger.kernel.org To: linux-kernel@vger.kernel.org From: Benjamin Rutt Subject: Re: clearing filesystem cache for I/O benchmarks Date: Wed, 28 Jul 2004 14:19:09 -0400 Message-ID: <87llh4atb6.fsf@osu.edu> References: <87vfgeuyf5.fsf@osu.edu> <20040726002524.2ade65c3.akpm@osdl.org> <87pt6iq5u2.fsf@osu.edu> <20040726234005.597a94db.akpm@osdl.org> <4106013E.30408@namesys.com> <87vfg9nyqv.fsf@osu.edu> <410698FA.40400@namesys.com> <87k6wocnmk.fsf@osu.edu> <4107DC4C.3040603@namesys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: dhcp065-025-157-254.columbus.rr.com Mail-Copies-To: nobody User-Agent: Gnus/5.110002 (No Gnus v0.2) Emacs/21.3.50 (gnu/linux) Cancel-Lock: sha1:EdQ9SWRn3n5q6P+LOrvWFHw4QXI= Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hans Reiser writes: > Probably the best you can do is write enough in the course of the test > that fsync at the end (or data remaining in cache) is insignificant > noise. Benchmarks that make fsync or the cache significant > unintentionally are common and bad. I assure you, our benchmarks will avoid these common pitfalls. -- Benjamin Rutt