From owner-freebsd-current@FreeBSD.ORG Sun May 21 17:52:41 2006 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 132EF16A7A9 for ; Sun, 21 May 2006 17:52:41 +0000 (UTC) (envelope-from jasone@FreeBSD.org) Received: from lh.synack.net (lh.synack.net [204.152.188.37]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7D6BC43D66 for ; Sun, 21 May 2006 17:52:14 +0000 (GMT) (envelope-from jasone@FreeBSD.org) Received: by lh.synack.net (Postfix, from userid 100) id 42EE85E4939; Sun, 21 May 2006 10:52:14 -0700 (PDT) Received: from [192.168.168.201] (moscow-cuda-gen2-68-64-60-20.losaca.adelphia.net [68.64.60.20]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by lh.synack.net (Postfix) with ESMTP id D46975E4917; Sun, 21 May 2006 10:52:12 -0700 (PDT) Message-ID: <4470A8CA.7010203@FreeBSD.org> Date: Sun, 21 May 2006 10:52:10 -0700 From: Jason Evans User-Agent: Mozilla Thunderbird 1.0.8-1.4.1 (X11/20060420) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Attila Nagy References: <8E2A65C9-1CEA-452F-B8BB-CAEB573F60DD@freebsd.org> <4470A58E.1050101@fsn.hu> In-Reply-To: <4470A58E.1050101@fsn.hu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 3.0.5 (2005-11-28) on lh.synack.net X-Spam-Level: * X-Spam-Status: No, score=1.8 required=5.0 tests=RCVD_IN_NJABL_DUL, RCVD_IN_SORBS_DUL autolearn=no version=3.0.5 Cc: freebsd-current@freebsd.org Subject: Re: jemalloc paper/slides available 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: Sun, 21 May 2006 17:52:51 -0000 Attila Nagy wrote: > On 2006. 05. 18. 19:19, Jason Evans wrote: > >> The paper and slides for jemalloc that I presented at BSDcan 2006 are >> available at: >> http://people.freebsd.org/~jasone/jemalloc/bsdcan2006/ >> If you read only one or the other, choose the paper. > > Thank you. Here is a quick comparison (the article is in hungarian) on a > Sun T2000 with Solaris and Linux and an Intel dual core low voltage Xeon > (Sossaman, Core Duo as a server processor): > http://hup.hu/node/25322 > > I've lost the results for FreeBSD 6 for different blocksizes, so only > 1kB is on the picture, which contains all OSs. With 1MB, you can see > only Solaris and Linux on the same machine, besides FreeBSD -CURRENT. > > Do you have any ideas about the sudden drop after 16 threads? (the > machine had four cores) I doubt this is an issue for the benchmark, but it's possible that the default of 16 arenas (on a 4-CPU system) is causing the dropoff. You can test this by setting MALLOC_OPTIONS=N in the environment (each N doubles the number of arenas). Jason