From owner-freebsd-current@FreeBSD.ORG Tue Jun 15 16:17:47 2004 Return-Path: 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 93C5316A4CE; Tue, 15 Jun 2004 16:17:47 +0000 (GMT) Received: from mail.takas.lt (mail-src.takas.lt [212.59.31.78]) by mx1.FreeBSD.org (Postfix) with ESMTP id BC5D743D49; Tue, 15 Jun 2004 16:17:46 +0000 (GMT) (envelope-from cedric@carpediem.fr) Received: from mail pickup service by mail.takas.lt with Microsoft SMTPSVC; Tue, 15 Jun 2004 19:17:43 +0300 Received: from mx2.freebsd.org ([216.136.204.119]) by mail.takas.lt with Microsoft SMTPSVC(5.0.2195.6713); Tue, 15 Jun 2004 14:07:46 +0300 Received: from hub.freebsd.org (hub.freebsd.org [216.136.204.18]) by mx2.freebsd.org (Postfix) with ESMTP id 5DF555612A; Tue, 15 Jun 2004 11:07:17 +0000 (GMT) (envelope-from owner-freebsd-threads@freebsd.org) Received: from hub.freebsd.org (localhost [127.0.0.1]) by hub.freebsd.org (Postfix) with ESMTP id 4C89D16A4E7; Tue, 15 Jun 2004 11:07:14 +0000 (GMT) Delivered-To: freebsd-threads@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id BCF0616A549; Tue, 15 Jun 2004 11:07:08 +0000 (GMT) Received: from angel.grumly.eu.org (angel.grumly.eu.org [193.138.90.69]) by mx1.FreeBSD.org (Postfix) with ESMTP id 60E3F43D64; Tue, 15 Jun 2004 11:07:08 +0000 (GMT) (envelope-from ced@grumly.eu.org) Received: by angel.grumly.eu.org (Postfix, from userid 1001) id 7B9B9FDAA; Tue, 15 Jun 2004 13:06:13 +0200 (CEST) Date: Tue, 15 Jun 2004 13:06:13 +0200 From: Cedric Tabary To: freebsd-current@freebsd.org Message-ID: <20040615110613.GB81104@efrei.fr> References: <03db01c4524f$f60d5760$6401a8c0@animal> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.4.2.1i X-URL: http://tabary.eu.org/ X-BeenThere: freebsd-threads@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Sender: owner-freebsd-threads@freebsd.org Errors-To: owner-freebsd-threads@freebsd.org X-OriginalArrivalTime: 15 Jun 2004 11:08:05.0607 (UTC) FILETIME=[0866B770:01C452C9] X-Mailman-Approved-At: Wed, 16 Jun 2004 11:49:41 +0000 cc: mike cc: freebsd-threads@freebsd.org Subject: Re: Possible Threading problem with -CURRENT / MySQL? X-BeenThere: freebsd-current@freebsd.org List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Jun 2004 16:17:47 -0000 On 14/06/2004 17:43, Robert Watson wrote: > On Mon, 14 Jun 2004, Lasse Laursen wrote: > > > Also on a SMP machine? I think that the problem is somehow related to > > SMP machines since the problems started when we moved to a SMP box :( > > If you haven't already, it would certainly be worth removing SMP from the > kernel on that box and just running a UP kernel to confirm that it's a > problem using SMP. I don't doubt it's the case, but it's worth checking > anyway to be sure. I have a similar smp config (dell poweredge 2650, dual Xeon 2.8, RAID5) I have best performance with linux 2.4.21-smp (not tried 2.6), but very poor (5x less) with mysqld using libpthreads on CURRENT. mysqld process is always in state 'kserel' or sometimes '*Giant' http://grumly.eu.org/~ced/dmesg.txt http://grumly.eu.org/~ced/CED-SMP.txt (no invariants, no witness) mysqld with linuxthreads seems to work better ... and even better with libc_r (but using only 1 cpu) Everything with HTT disabled in bios. Enabling HTT gives even worst performance :/ -- Cédric Tabary _______________________________________________ freebsd-threads@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-threads To unsubscribe, send any mail to "freebsd-threads-unsubscribe@freebsd.org"