From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755402Ab2IQJNx (ORCPT ); Mon, 17 Sep 2012 05:13:53 -0400 Received: from mail.anarazel.de ([217.115.131.40]:44197 "EHLO mail.anarazel.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755342Ab2IQJNw (ORCPT ); Mon, 17 Sep 2012 05:13:52 -0400 From: Andres Freund To: Jerome Glisse Subject: Re: Excessive kernel time inside ttm when scrolling on a r700 in a multimonitor setup Date: Mon, 17 Sep 2012 11:13:44 +0200 User-Agent: KMail/1.13.7 (Linux/3.6.0-rc4-andres-00001-ga7ab0ca; KDE/4.8.4; x86_64; ; ) Cc: LKML , David Airlie , Jerome Glisse , Alex Deucher References: <201209170118.25955.andres@anarazel.de> In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201209171113.45276.andres@anarazel.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Monday, September 17, 2012 10:47:10 AM Jerome Glisse wrote: > On Sun, Sep 16, 2012 at 7:18 PM, Andres Freund wrote: > > Hi everyone, > > > > In several gui programs, most notably and reproducably, I can trivially > > make Xorg spend the whole cpu time in the kernel. It might be an Xorg > > bug, but from my untrained gut feeling it doesn't look that way. > > > > Anything more you need than whats already in the email? > > > Here are some details: > Is it an AGP card ? It looks like it's the PAT update that kills perf > for you, not much we can do, the pool allocator is probably starve. If you mean AGP as in the old strange graphics bus, no. Its a pcie card. If that helps you, more detailedly the card is a: SAPPHIRE Radeon HD6870 Unfortunately the manufacturers page is remarkably devoid of details...: http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1037&lid=1&pid=1270&leg=0 Greetings, Andres