From owner-freebsd-current@FreeBSD.ORG Tue Mar 4 20:08:24 2008 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 12576106566B; Tue, 4 Mar 2008 20:08:24 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222]) by mx1.freebsd.org (Postfix) with ESMTP id CEB0E8FC23; Tue, 4 Mar 2008 20:08:23 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (unknown [192.168.61.3]) by phk.freebsd.dk (Postfix) with ESMTP id AEA5217104; Tue, 4 Mar 2008 19:47:38 +0000 (UTC) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.14.2/8.14.2) with ESMTP id m24JlcbM018105; Tue, 4 Mar 2008 19:47:38 GMT (envelope-from phk@critter.freebsd.dk) To: Jason Evans From: "Poul-Henning Kamp" In-Reply-To: Your message of "Tue, 04 Mar 2008 11:14:15 PST." <47CD9F87.4000509@freebsd.org> Date: Tue, 04 Mar 2008 19:47:38 +0000 Message-ID: <18104.1204660058@critter.freebsd.dk> Sender: phk@critter.freebsd.dk Cc: gnn@freebsd.org, current@freebsd.org Subject: Re: Differences in malloc between 6 and 7? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Mar 2008 20:08:24 -0000 In message <47CD9F87.4000509@freebsd.org>, Jason Evans writes: >gnn@freebsd.org wrote: >It's worth mentioning that the benchmark is of marginal use, due to a >simple (but common) flaw. At a minimum, a malloc benchmark should touch >all allocated memory at least once. Otherwise, the benchmark is IMO too >far removed from reality to measure anything of value, [...] A point I belive I also made in my phkmalloc paper 10+ years ago, so there really is no excuse... -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.