From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757982Ab0IXTjG (ORCPT ); Fri, 24 Sep 2010 15:39:06 -0400 Received: from cpoproxy1-pub.bluehost.com ([69.89.21.11]:43717 "HELO cpoproxy1-pub.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1757935Ab0IXTjE convert rfc822-to-8bit (ORCPT ); Fri, 24 Sep 2010 15:39:04 -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=d42p9K9LYa6hUn3h7yd/AhyeQuYnPvb1vGYbrrt0Jyb/oFdntsLhDWXovz1fokSd9COiuGzs7W/zeE8FynOQBBk9U7O3TDIpmFc14JalV63v/8CvETsolrl0T/Lc+vLQ; Date: Fri, 24 Sep 2010 12:39:01 -0700 From: Jesse Barnes To: Vasily Khoruzhick Cc: Thomas Gleixner , Sitsofe Wheeler , Venkatesh Pallipadi , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Len Brown Subject: Re: Interrupt latency on some 945GM platforms Message-ID: <20100924123901.243c85e1@jbarnes-desktop> In-Reply-To: <201009162306.59508.anarsoul@gmail.com> References: <201009132336.17310.anarsoul@gmail.com> <201009162142.10629.anarsoul@gmail.com> <201009162306.59508.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 23:06:46 +0300 Vasily Khoruzhick wrote: > В сообщении от 16 of September 2010 21:50:50 автор Thomas Gleixner написал: > > Ok. The problematic part of HPET was not the clocksource, it was the > > clock event device which failed to deliver interrupts occasionally. It > > was worth a try at least. > > Hm, it seems that jerky glxgears is not related to jerky keyboard events. > Keyboard is jerky only in konsole (kde terminal emulator), it seems something > happened it seems that font rendering performance is much worse in latest > xf86-video-intel than in xf86-video-intel-2.12.0. Len just had me try a few things too: - maxcpus=1 lets things work - offlining cpu1 at runtime (echo 0 > /sys/devices/system/cpu/cpu1/online) lets things work - binding the i915 interrupt to cpu 0 does *not* help Vasily and Paolo, do you both have Atom CPUs with hyperthreading enabled? Thanks, -- Jesse Barnes, Intel Open Source Technology Center