Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751138AbVJ2EfN (ORCPT ); Sat, 29 Oct 2005 00:35:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751139AbVJ2EfN (ORCPT ); Sat, 29 Oct 2005 00:35:13 -0400 Received: from [67.137.28.189] ([67.137.28.189]:62337 "EHLO vger.utah-nac.org") by vger.kernel.org with ESMTP id S1751138AbVJ2EfL (ORCPT ); Sat, 29 Oct 2005 00:35:11 -0400 Message-ID: <4362E7B3.6020509@utah-nac.org> Date: Fri, 28 Oct 2005 21:08:35 -0600 From: jmerkey User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040510 X-Accept-Language: en-us, en MIME-Version: 1.0 To: jmerkey Cc: Nick Piggin , Jeff Garzik , "Chen, Kenneth W" , linux-kernel@vger.kernel.org, Jens Axboe Subject: Re: kernel performance update - 2.6.14 References: <200510282344.j9SNihg27345@unix-os.sc.intel.com> <4362BA30.2020504@pobox.com> <4362A9A7.2090101@utah-nac.org> <4362E329.8040204@yahoo.com.au> <4362E71A.6030904@utah-nac.org> In-Reply-To: <4362E71A.6030904@utah-nac.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1237 Lines: 37 jmerkey wrote: > Nick Piggin wrote: > >> Jeff V. Merkey wrote: >> >>> >>> Verified. These numbers reflect my measurements as well. I have not >>> moved off 2.6.9 to newer kernels on shipping products due to these >>> issues. There are also serious stability issues as well, though >>> 2.6.14 seems a little better than than previous kernels. Jeff >>> >> >> These issues aren't going to fix themselves. Did you investigate >> any of the performance or (more importantly) stability problems? > > Added a little more clarification. Jeff > Yes I did. The list wasn't too long. I had problems with RCU messages > and irq warn messages at very high loads and init respawning itself > subjected to loads > 369 MB/S to the disk channels on 2.6.13. > Performance was down on disk I/O [vs.] 2.6.9. I did not investigate > the BIO fixes but something changed there. Theres also some memory > problems with corruption somewhere in the 2.6.14 (during module unload > and shutdown). > > Jeff > - 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/