Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 16 Dec 2002 01:36:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 16 Dec 2002 01:36:59 -0500 Received: from wiprom2mx2.wipro.com ([203.197.164.42]:52408 "EHLO wiprom2mx2.wipro.com") by vger.kernel.org with ESMTP id convert rfc822-to-8bit; Mon, 16 Dec 2002 01:36:58 -0500 x-mimeole: Produced By Microsoft Exchange V6.0.5762.3 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Subject: [BENCHMARK] not so good performance of 2.5.52 on TIO bench Date: Mon, 16 Dec 2002 12:14:35 +0530 Message-ID: <94F20261551DC141B6B559DC4910867201DFBB@blr-m3-msg.wipro.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [BENCHMARK] not so good performance of 2.5.52 on TIO bench Thread-Index: AcKkzpiGwMh7xY5dT4qE6ckHItSyOQ== From: "Aniruddha M Marathe" To: X-OriginalArrivalTime: 16 Dec 2002 06:44:35.0922 (UTC) FILETIME=[9922FB20:01C2A4CE] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3146 Lines: 63 Hi, Here are the results of comparison of kernel 2.5.51 and 2.5.52 on TIObench. key findings. ------------------------------------------------------------- test 2.5.52 (as compared to 2.5.51) APPRXIMATE % change ------------------------------------------------------------- rate (megabytes per second) 5% decrease CPU % utilization 5% decrease Average Latency less than 2% increase Maximum latency 15 % increase CPU efficiency less than 2% increase ------------------------------------------------------------- ------------------------------------------------------------- Linux kernel 2.5.52 TIO bench results Date 16th december 2002 ------------------------------------------------------------- Unit information ================ File size = megabytes Blk Size = bytes Rate = megabytes per second CPU% = percentage of CPU used during the test Latency = milliseconds Lat% = percent of requests that took longer than X seconds CPU Eff = Rate divided by CPU% - throughput per cpu load Sequential Reads File Blk Num Avg Maximum Lat% Lat% CPU Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff ---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- ----- 2.5.52 252 4096 10 8.48 5.251% 12.152 1825.07 0.00000 0.00000 161 Random Reads File Blk Num Avg Maximum Lat% Lat% CPU Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff ---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- ----- 2.5.52 252 4096 10 0.50 0.729% 211.130 1079.20 0.00000 0.00000 69 Sequential Writes File Blk Num Avg Maximum Lat% Lat% CPU Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff ---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- ----- 2.5.52 252 4096 10 16.17 30.00% 4.525 29226.70 0.06094 0.00625 54 Random Writes File Blk Num Avg Maximum Lat% Lat% CPU Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff ---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- ----- 2.5.52 252 4096 10 0.78 1.084% 0.675 992.39 0.00000 0.00000 72 regards, Aniruddha Marathe WIPRO Technologies, India aniruddha.marathe@wipro.com - 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/