Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758117AbXI3PWk (ORCPT ); Sun, 30 Sep 2007 11:22:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755030AbXI3PWd (ORCPT ); Sun, 30 Sep 2007 11:22:33 -0400 Received: from usermail.globalproof.net ([194.146.153.18]:38466 "EHLO usermail.globalproof.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754802AbXI3PWc (ORCPT ); Sun, 30 Sep 2007 11:22:32 -0400 From: "Denys" To: linux-kernel@vger.kernel.org Subject: 2.6.21 -> 2.6.22 & 2.6.23-rc8 performance regression Date: Sun, 30 Sep 2007 18:22:18 +0300 Message-Id: <20070930152218.M1504@nuclearcat.com> X-Mailer: OpenWebMail 2.52 20060502 X-OriginatingIP: 195.69.208.251 (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: 2056 Lines: 55 P.S. It seems SLAB/SLUB doesn't make much difference, just seems SLUB use a bit more some resources. Still problem appearing with softirqd/0 or softirqd/1 taking a lot CPU (while on 2.6.21 it never came up of the "top"), and doesn't matter - if NAPI on e1000 disabled or enabled. Additionally disabling all disk operations doesn't make any difference. defaulthost ~ #mpstat 1 Linux 2.6.23-rc8-build-0017 (defaulthost) 09/30/07 21:20:29 CPU %user %nice %sys %iowait %irq %soft %steal %idle intr/s 21:20:30 all 21.11 0.00 14.57 8.04 0.00 48.74 0.00 7.54 3632.00 21:20:31 all 23.38 0.00 12.94 10.95 0.00 52.74 0.00 0.00 1524.00 21:20:32 all 21.50 0.00 16.50 8.50 0.00 53.50 0.00 0.00 1473.00 21:20:33 all 22.39 0.00 14.93 4.98 0.50 53.23 0.00 3.98 1492.08 21:20:34 all 5.31 0.00 0.97 0.48 0.00 93.24 0.00 0.00 1351.96 On 2.6.21 it looks: defaulthost ~ #mpstat 1 Linux 2.6.21-gentoo-r3-build-0015 (defaulthost) 09/30/07 18:21:50 CPU %user %nice %sys %iowait %irq %soft %steal %idle intr/s 18:21:51 all 29.50 0.00 21.50 12.50 0.00 6.00 0.00 30.50 8416.00 18:21:52 all 26.00 0.00 19.00 12.50 0.50 7.00 0.00 35.00 8663.64 18:21:53 all 27.23 0.00 17.82 13.37 0.99 6.44 0.00 34.16 7828.71 18:21:54 all 26.13 0.00 16.08 18.59 0.00 7.04 0.00 32.16 8657.58 18:21:55 all 22.89 0.00 16.92 18.91 0.50 6.47 0.00 34.33 7957.43 18:21:56 all 28.14 0.00 21.61 17.59 0.50 6.03 0.00 26.13 8531.00 -- 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/