From owner-freebsd-performance@FreeBSD.ORG Wed Oct 27 19:36:46 2010 Return-Path: Delivered-To: performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 24099106566B; Wed, 27 Oct 2010 19:36:46 +0000 (UTC) (envelope-from mike@sentex.net) Received: from smarthost2.sentex.ca (smarthost2-6.sentex.ca [IPv6:2607:f3e0:80:80::2]) by mx1.freebsd.org (Postfix) with ESMTP id CDD3B8FC12; Wed, 27 Oct 2010 19:36:45 +0000 (UTC) Received: from lava.sentex.ca (pyroxene.sentex.ca [199.212.134.18]) by smarthost2.sentex.ca (8.14.4/8.14.4) with ESMTP id o9RJabLu099424 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 27 Oct 2010 15:36:37 -0400 (EDT) (envelope-from mike@sentex.net) Received: from mdt-xp.sentex.net (simeon.sentex.ca [192.168.43.27]) by lava.sentex.ca (8.14.4/8.14.4) with ESMTP id o9RJaaDF047543; Wed, 27 Oct 2010 15:36:36 -0400 (EDT) (envelope-from mike@sentex.net) Message-Id: <201010271936.o9RJaaDF047543@lava.sentex.ca> X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9 Date: Wed, 27 Oct 2010 15:36:42 -0400 To: Ivan Voras , performance@freebsd.org From: Mike Tancsa In-Reply-To: <201010271705.o9RH5Auc046763@lava.sentex.ca> References: <20101021215330.GA86224@dan.emsphone.com> <20101021224237.GG52404@albert.catwhisker.org> <4CC6C396.1010905@freebsd.org> <20101026174501.GH2262@albert.catwhisker.org> <20101027105506.GD9443@albert.catwhisker.org> <20101027111904.GF9443@albert.catwhisker.org> <201010271546.o9RFkRQn046373@lava.sentex.ca> <20101027163417.GI9443@albert.catwhisker.org> <201010271705.o9RH5Auc046763@lava.sentex.ca> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Scanned-By: MIMEDefang 2.67 on 205.211.164.50 Cc: Subject: Re: Possible evidence of performance regression for 8.1-S (vs. 7.1) X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Oct 2010 19:36:46 -0000 At 01:05 PM 10/27/2010, Mike Tancsa wrote: >At 12:34 PM 10/27/2010, David Wolfskill wrote: > >>* release/7.1.0, with the following merged in: >> r186860 from stable/7 >> r190970 from stable/7 >> r203072 from head >> r209964 from stable/7 >> and using the MAC kernel config >> >>* stable/8 @r214029 using the GENERIC kernel config > >OK. >I was using GENERIC vs GENERIC from RELENG7 and RELENG8 from >today. MAC is in by default in RELENG_8 I ran the file io tests again 5 times RELENG7, Operations performed: 6000 Read, 4000 Write, 12672 Other = 22672 Total Read 93.75Mb Written 62.5Mb Total transferred 156.25Mb (6.1136Mb/sec) 391.27 Requests/sec executed Test execution summary: total time: 25.5578s total number of events: 10000 total time taken by event execution: 12.0346 per-request statistics: min: 0.01ms avg: 1.20ms max: 101.39ms approx. 95 percentile: 4.77ms Threads fairness: events (avg/stddev): 625.0000/97.89 execution time (avg/stddev): 0.7522/0.15 RELENG7 times for 5 runs 25.5578 26.5351 25.5734 27.0934 26.6094 RELENG8, ATA driver times for 5 runs 28.9372 27.3766 29.3507 28.3406 28.0904 RELENG7 throughput (MB/s) 6.1136 5.8884 6.1099 5.7671 5.8720 RELENG_8 ATA throughput (MB/s) 5.3996 5.7074 5.3236 5.5133 5.5624 ministat -s -w 60 7 8 x 7 + 8 +------------------------------------------------------------+ |+ + + + + x xx x| | |______M____A__________| | | |__________AM_________| | +------------------------------------------------------------+ N Min Max Median Avg Stddev x 5 5.7671 6.1136 5.8884 5.9502 0.15464778 + 5 5.3236 5.7074 5.5133 5.50126 0.1485552 Difference at 95.0% confidence -0.44894 +/- 0.221147 -7.54496% +/- 3.71663% (Student's t, pooled s = 0.151632) -------------------------------------------------------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet since 1994 www.sentex.net Cambridge, Ontario Canada www.sentex.net/mike