From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751771AbWHSSxv (ORCPT ); Sat, 19 Aug 2006 14:53:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751772AbWHSSxv (ORCPT ); Sat, 19 Aug 2006 14:53:51 -0400 Received: from dvhart.com ([64.146.134.43]:64715 "EHLO dvhart.com") by vger.kernel.org with ESMTP id S1751771AbWHSSxu (ORCPT ); Sat, 19 Aug 2006 14:53:50 -0400 Message-ID: <44E75E32.7020703@mbligh.org> Date: Sat, 19 Aug 2006 11:53:38 -0700 From: mbligh User-Agent: Thunderbird 1.5.0.5 (Macintosh/20060719) MIME-Version: 1.0 To: Andrew Morton Cc: Ingo Molnar , Mike Galbraith , linux-kernel@vger.kernel.org Subject: Re: [Bugme-new] [Bug 7027] New: CD Ripping speeds slow with 2.6.17 References: <200608191800.k7JI0ML0015395@fire-2.osdl.org> <20060819111437.a88f71cd.akpm@osdl.org> In-Reply-To: <20060819111437.a88f71cd.akpm@osdl.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andrew Morton wrote: > On Sat, 19 Aug 2006 11:00:22 -0700 > bugme-daemon@bugzilla.kernel.org wrote: > >> http://bugzilla.kernel.org/show_bug.cgi?id=7027 >> >> Summary: CD Ripping speeds slow with 2.6.17 >> Kernel Version: 2.6.17 >> Status: NEW >> Severity: normal >> Owner: bzolnier@gmail.com >> Submitter: brnewber@gmail.com >> >> >> Most recent kernel where this bug did not occur: 2.6.16 >> Distribution: Gentoo >> Hardware Environment: ASUS K8V mobo, AMD64 2200, 1GB RAM >> Software Environment: Gentoo >> Problem Description: Ever since 2.6.17 my cd ripping speeds with one particular >> CD ripper/encoder (namely the one I wrote) have been slow. >> >> Using git bisect I tracked it down to this patch.. >> >> 9430d58e34ec3861e1ca72f8e49105b227aad327 is first bad commit >> commit 9430d58e34ec3861e1ca72f8e49105b227aad327 >> Author: Mike Galbraith >> Date: Wed Mar 22 00:07:33 2006 -0800 >> >> [PATCH] sched: remove sleep_avg multiplier >> >> Remove the sleep_avg multiplier. This multiplier was necessary back when >> we had 10 seconds of dynamic range in sleep_avg, but now that we only have >> one second, it causes that one second to be compressed down to 100ms in >> some cases. This is particularly noticeable when compiling a kernel in a >> slow NFS mount, and I believe it to be a very likely candidate for other >> recently reported network related interactivity problems. >> >> In testing, I can detect no negative impact of this removal. >> >> Signed-off-by: Mike Galbraith >> Acked-by: Ingo Molnar >> Signed-off-by: Andrew Morton >> Signed-off-by: Linus Torvalds >> >> :040000 040000 28d2d8f53ab7b5dd89e846f2dcc107ce88cb695f 780a13c0f8ba5465db79c668 >> >> I'm honestly not sure if my application is doing something it shouldn't or if >> this is a legitimate kernel bug. Being totally at a loss I'm filing it here.I >> just know that before the above patch I was ripping at about speeds of 9.0x and >> now I rip at 1.2x. >> > > sched problems... > > Martin, this might be the source of your `dvdrip' woes? > Nope, was an older kernel than that, and oddly doesn't always seem to happen. I'll try to get that box upgraded, and try to reproduce it again.