Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753655AbXJAKbS (ORCPT ); Mon, 1 Oct 2007 06:31:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751447AbXJAKbK (ORCPT ); Mon, 1 Oct 2007 06:31:10 -0400 Received: from usermail.globalproof.net ([194.146.153.18]:41987 "EHLO usermail.globalproof.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751299AbXJAKbJ (ORCPT ); Mon, 1 Oct 2007 06:31:09 -0400 From: "Denys" To: Andi Kleen Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.21 -> 2.6.22 & 2.6.23-rc8 performance regression Date: Mon, 1 Oct 2007 13:30:52 +0300 Message-Id: <20071001103026.M59805@nuclearcat.com> In-Reply-To: References: <20070930144443.M52139@visp.net.lb> <46FFE17C.9020202@cosmosbay.com> <200709301425.37564.nickpiggin@yahoo.com.au> <20070930220452.M25621@nuclearcat.com> X-Mailer: OpenWebMail 2.52 20060502 X-OriginatingIP: 194.146.154.161 (denys@visp.net.lb) MIME-Version: 1.0 Content-Type: text/plain; charset=koi8-r Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 955 Lines: 28 Already i did, and it didn't show real failure point. On 01 Oct 2007 12:01:24 +0200, Andi Kleen wrote > "Denys" writes: > > > by mistake i will miss a point (it can detect bug easily, IF softirq in > > mpstat 1 will jump up to 30+%. On 2.6.21 it is always staying +-10%, on > > "buggy" version it jumps up to 100%. Now cause less load at night up to 30- > > 50%, so on hardware it is not very noticeable (thats why maybe not much > > feedbacks), i am trying to utilise hardware maximum as possible - so i feel > > regressions much more. > > You could use oprofile to find where the CPU time is spent > > -Andi -- Denys Fedoryshchenko Technical Manager Virtual ISP S.A.L. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/