Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754305AbZIIVXW (ORCPT ); Wed, 9 Sep 2009 17:23:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754252AbZIIVXW (ORCPT ); Wed, 9 Sep 2009 17:23:22 -0400 Received: from mail-yx0-f175.google.com ([209.85.210.175]:50125 "EHLO mail-yx0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753676AbZIIVXV (ORCPT ); Wed, 9 Sep 2009 17:23:21 -0400 MIME-Version: 1.0 In-Reply-To: <87my53vo6d.fsf@depni.sinp.msu.ru> References: <20090906205952.GA6516@elte.hu> <87hbvdiogq.fsf@depni.sinp.msu.ru> <873a6xdqwq.fsf@depni.sinp.msu.ru> <20090909155223.GA12065@elte.hu> <87my53vo6d.fsf@depni.sinp.msu.ru> Date: Wed, 9 Sep 2009 17:23:24 -0400 X-Google-Sender-Auth: 855e617b92da87b9 Message-ID: <50fc5f090909091423s2a7e652em2fa4cc80b41a6f74@mail.gmail.com> Subject: Re: Epic regression in throughput since v2.6.23 From: Cory Fields To: linux-kernel@vger.kernel.org Cc: mingo@elte.hu Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 597 Lines: 16 I've noticed the same regression since around 2.6.23, mainly in multi-core video decoding. A git bisect reveals the guilty commit to be: 33b0c4217dcd67b788318c3192a2912b530e4eef It is easily visible because with the guilty commit included, one core of the cpu remains pegged while the other(s) are severly underutilized. Hope this helps Cory Fields -- 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/