From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965042AbXBYRvU (ORCPT ); Sun, 25 Feb 2007 12:51:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965046AbXBYRvU (ORCPT ); Sun, 25 Feb 2007 12:51:20 -0500 Received: from smtp003.mail.ukl.yahoo.com ([217.12.11.34]:46187 "HELO smtp003.mail.ukl.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S965042AbXBYRvT (ORCPT ); Sun, 25 Feb 2007 12:51:19 -0500 X-Greylist: delayed 401 seconds by postgrey-1.27 at vger.kernel.org; Sun, 25 Feb 2007 12:51:19 EST DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.it; h=Received:X-YMail-OSG:Subject:From:To:Cc:Content-Type:Organization:Date:Message-Id:Mime-Version:X-Mailer:Content-Transfer-Encoding; b=EEon6jdhfAXJGGbqLn1irUKH6jUyVlwLf7MptSOfYBwuKIJTsvWtVxFODJVkCBjeM1Tv7EwX35rICanabbf5T2bNf8wsCiNHh4LxUMSiU2EjRxajn0j07z6+Oa2VvJVnXkngpClcchLp9AYKiGTZURlUssBsdetfltG+q/aP/jY= ; X-YMail-OSG: 1x5sR2AVM1lXhb5ZOJfZCkG7YplrApZMs3Lpn0eHpc6uPScYOJj.b6XDpnSaTVzVcePTltI1JKI9OYSfEpVTyW.Mmn1Ebx3ZwznWaZVZ1J2WZnPVliel_yQlNs.imgTcMprKw8dczsNB Subject: SMP performance degradation with sysbench From: Lorenzo Allegrucci To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Suparna Bhattacharya , Jens Axboe Content-Type: text/plain Organization: -ENOENT Date: Sun, 25 Feb 2007 18:44:35 +0100 Message-Id: <1172425476.5489.11.camel@odyssey.lan> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi lkml, according to the test below (sysbench) Linux seems to have scalability problems beyond 8 client threads: http://jeffr-tech.livejournal.com/6268.html#cutid1 http://jeffr-tech.livejournal.com/5705.html Hardware is an 8-core amd64 system and jeffr seems willing to try more Linux versions on that machine. Anyway, is there anyone who can reproduce this? Chiacchiera con i tuoi amici in tempo reale! http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com