Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757298AbYHSTVa (ORCPT ); Tue, 19 Aug 2008 15:21:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756808AbYHSTVW (ORCPT ); Tue, 19 Aug 2008 15:21:22 -0400 Received: from smtpq2.tilbu1.nb.home.nl ([213.51.146.201]:45615 "EHLO smtpq2.tilbu1.nb.home.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755884AbYHSTVV (ORCPT ); Tue, 19 Aug 2008 15:21:21 -0400 Message-ID: <48AB1D62.6030406@keyaccess.nl> Date: Tue, 19 Aug 2008 21:22:10 +0200 From: Rene Herman User-Agent: Thunderbird 2.0.0.16 (X11/20080707) MIME-Version: 1.0 To: Venki Pallipadi CC: Ingo Molnar , Dave Airlie , "Li, Shaohua" , Yinghai Lu , Andreas Herrmann , Arjan van de Ven , "dri-users@lists.sourceforge.net" , Linux Kernel , "Siddha, Suresh B" , Thomas Gleixner , "H. Peter Anvin" Subject: Re: AGP and PAT (induced?) problem (on AMD family 6) References: <48972EA8.8040001@keyaccess.nl> <20080815142218.GC12954@elte.hu> <48A59FAC.7050605@keyaccess.nl> <48AA9C3B.5030309@keyaccess.nl> <20080819102633.GE6722@elte.hu> <48AAD680.7020508@keyaccess.nl> <20080819190757.GA17470@linux-os.sc.intel.com> In-Reply-To: <20080819190757.GA17470@linux-os.sc.intel.com> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -1.0 (-) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1575 Lines: 41 On 19-08-08 21:07, Venki Pallipadi wrote: > On Tue, Aug 19, 2008 at 07:19:44AM -0700, Rene Herman wrote: >> I believe the 14 seconds for first shutdown to 5 later might be >> telling. Sounds like something might have fixed up uncached >> entries. >> >> I'd really like a reply from the AGP or PAT side right about now. > > Hmm. Looks like there are more than 16000 entries in the PAT list! > > This delay may be due to the overhead of parsing this linked list > everytime for a new entry, rather than any problem with cache setting > itself. > > I am working on a patch to optimize this pat list parsing for the > simple case. Should be able to send it out later today, for testing. Thanks for the reply. It's with 64MB of AGP memory which I guess is at the low end these days. Would your reply mean that basically everyone on 2.6.27 should now be experiencing this? I noticed it was PAT related due to Shaohua Li's: http://marc.info/?l=linux-kernel&m=121783222306075&w=2 which lists very different times (patch there did not help any). As another by the way, probably not surprising but I earlier also tried both unmounting and completely compiling out debugfs just in case I was seeing a debugging related sysmptom. No help either. It's evening here so I'll probably not be able to test until tomorrow. Rene. -- 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/