Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 17 Sep 2002 16:45:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 17 Sep 2002 16:45:04 -0400 Received: from e6.ny.us.ibm.com ([32.97.182.106]:41093 "EHLO e6.ny.us.ibm.com") by vger.kernel.org with ESMTP id ; Tue, 17 Sep 2002 16:45:02 -0400 Importance: Normal Sensitivity: Subject: Re: [Lse-tech] Hyperthreading performance on 2.4.19 and 2.5.32 To: "Martin J. Bligh" Cc: linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net X-Mailer: Lotus Notes Release 5.0.3 (Intl) 21 March 2000 Message-ID: From: "Duc Vianney" Date: Tue, 17 Sep 2002 15:49:45 -0500 X-MIMETrack: Serialize by Router on D01ML072/01/M/IBM(Release 5.0.11 |July 29, 2002) at 09/17/2002 04:49:47 PM MIME-Version: 1.0 Content-type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1925 Lines: 62 >What happened to the -38% degradation you found? That seems to have >fallen off the results list for some reason ... did you fix it, or is it still >there? Martin ... Thanks for pointing it out. The -38% degradation was seen on Sync Random Disk Writes, Sync Sequential Disk Writes, and Sync Disk Copies observed from the AIM9 bencmark running in Single User test mode. The degradation is still there and I will investigate it later when we have the hardware resource back. Thanks ... Duc. "Martin J. Bligh" @lists.sourceforge.net on 09/17/2002 03:05:35 PM Sent by: lse-tech-admin@lists.sourceforge.net To: Duc Vianney/Austin/IBM@IBMUS, linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net cc: Subject: Re: [Lse-tech] Hyperthreading performance on 2.4.19 and 2.5.32 > Benchmarks. For multithreaded benchmarks: chat, dbench and tbench. > Summary of results. The results on Linux kernel 2.4.19 show HT might > improve multithreaded application by as much as 30%. On kernel 2.5.32, > HT may provide speed-up as high as 60%. What happened to the -38% degradation you found? That seems to have fallen off the results list for some reason ... did you fix it, or is it still there? M. ------------------------------------------------------- This SF.NET email is sponsored by: AMD - Your access to the experts on Hammer Technology! Open Source & Linux Developers, register now for the AMD Developer Symposium. Code: EX8664 http://www.developwithamd.com/developerlab _______________________________________________ Lse-tech mailing list Lse-tech@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lse-tech - 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/