From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932180Ab0IXSl1 (ORCPT ); Fri, 24 Sep 2010 14:41:27 -0400 Received: from cpoproxy2-pub.bluehost.com ([67.222.39.38]:45757 "HELO cpoproxy2-pub.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753645Ab0IXSl0 convert rfc822-to-8bit (ORCPT ); Fri, 24 Sep 2010 14:41:26 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=virtuousgeek.org; h=Received:Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Identified-User; b=qoQMDBZ1y2/AjrayQcZ/sMEymWInVuBPl3kKYrx5zqKNPp9uir0Tcfn4HHKTXeOVfdKcmsWUURuRXxcN/Bo9TuGhZSZfS6DdimVT9Ml7CSWPrptlAozutXdmvMnKLf7x; Date: Fri, 24 Sep 2010 11:41:22 -0700 From: Jesse Barnes To: Vasily Khoruzhick Cc: Sitsofe Wheeler , Thomas Gleixner , Venkatesh Pallipadi , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: Interrupt latency on some 945GM platforms Message-ID: <20100924114122.4bfce00e@jbarnes-desktop> In-Reply-To: <201009161803.10531.anarsoul@gmail.com> References: <201009132336.17310.anarsoul@gmail.com> <201009141529.53179.anarsoul@gmail.com> <20100914224111.GA14467@sucs.org> <201009161803.10531.anarsoul@gmail.com> X-Mailer: Claws Mail 3.7.6 (GTK+ 2.18.9; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 67.174.193.198 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 16 Sep 2010 18:03:04 +0300 Vasily Khoruzhick wrote: > В сообщении от 15 of September 2010 01:41:11 автор Sitsofe Wheeler написал: > > > > processor.max_cstate=2 > > > > > > Nope, it doesn't work with max_cstate=2 > > > > Perhaps intel_idle is being used? Any mention of it in dmesg? > > Sitsofe, maybe you misunderstood me, I mean with max_cstate=1 graphics is > smooth, with higher values (i.e. max_cstate=2) graphics is jerky. > > Btw, Jesse, any comments/solutions/workarounds except one with > processor.max_cstate=1 in kernel commandline? Should I file a bug on fdo > bugzilla? FDO bug for this is https://bugs.freedesktop.org/show_bug.cgi?id=30364. I still don't have a root cause, but at least we have a workaround. -- Jesse Barnes, Intel Open Source Technology Center