Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 25 Dec 2002 20:11:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 25 Dec 2002 20:11:52 -0500 Received: from 205-158-62-139.outblaze.com ([205.158.62.139]:55210 "HELO spf1.us.outblaze.com") by vger.kernel.org with SMTP id ; Wed, 25 Dec 2002 20:11:50 -0500 Message-ID: <20021226000308.31344.qmail@linuxmail.org> Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Content-Transfer-Encoding: 7bit MIME-Version: 1.0 X-Mailer: MIME-tools 5.41 (Entity 5.404) From: "Paolo Ciarrocchi" To: akpm@digeo.com, vda@port.imtp.ilyichevsk.odessa.ua, conma@kolivas.net, riel@conectiva.com.br Cc: ciarrocchi@linuxmail.org, linux-kernel@vger.kernel.org Date: Thu, 26 Dec 2002 08:03:08 +0800 Subject: Re: Poor performance with 2.5.52, load and process in D state X-Originating-Ip: 193.76.202.244 X-Originating-Server: ws5-1.us4.outblaze.com Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3755 Lines: 103 Hi Andrew/Rik/Con/all Andrew, I promised you to run a few tests using osdb (www.osdb.org with 40M of data)against both 2.4.19 and 2.5.52 booting the kernel with the mem=XXM paramter. I also played with the /proc/sys/vm/swappiness parameter, I've ran all the tests with the standard swappiness value (60), with 80 and 100. 100 means the 2.4 behaviour, isn't it ? Looking at the results it seems that the "standard" value is too low, probably 80 is the best one. What do you think ? There is no a big difference in the Time results between 80 and 100 but looking at the top output while I was running the tests I saw a big difference in the swap usage. Con, could you please run the contest test against 2.5.52 or .53 platying with the swappines parameter ? Below the results of my test, please let me know if you want I run more tests or if you need more information. Ciao, Paolo -- By Memory Size -- Kernel Memory Swappiness Time 2.4.19 24 x 3371.98 seconds (0:56:11.98) 2.5.52 24 60 4585.03 seconds (1:16:25.03) 2.5.52 24 80 4285.98 seconds (1:11:25.98) 2.5.52 24 100 3633.64 seconds (1:00:33.64) 2.4.19 40 x 809.39 seconds (0:13:29.39) 2.5.52 40 60 3771.85 seconds (1:02:51.85) 2.5.52 40 80 3342.82 seconds (0:55:42.82) 2.5.52 40 100 855.22 seconds (0:14:15.22) 2.4.19 64 x 796.03 seconds (0:13:16.03) 2.5.52 64 60 840.41 seconds (0:14:00.41) 2.5.52 64 80 828.59 seconds (0:13:48.59) 2.5.52 64 100 833.92 seconds (0:13:53.92) 2.4.19 80 x 790.80 seconds (0:13:10.80) 2.5.52 80 60 788.65 seconds (0:13:08.65) 2.5.52 80 80 790.54 seconds (0:13:10.54) 2.5.52 80 100 793.79 seconds (0:13:13.79) 2.5.52 96 60 779.54 seconds (0:12:59.54) 2.5.52 96 80 782.86 seconds (0:13:02.86) 2.5.52 96 100 778.81 seconds (0:12:58.81) 2.4.19 all x 778.65 seconds (0:12:58.65) 2.5.52 all 60 768.98 seconds (0:12:48.98) 2.5.52 all 80 770.43 seconds (0:12:50.43) 2.5.52 all 100 771.76 seconds (0:12:51.76) -- By kernel version -- 2.4.19 24 x 3371.98 seconds (0:56:11.98) 2.4.19 40 x 809.39 seconds (0:13:29.39) 2.4.19 64 x 796.03 seconds (0:13:16.03) 2.4.19 80 x 790.80 seconds (0:13:10.80) 2.4.19 all x 778.65 seconds (0:12:58.65) 2.5.52 24 60 4585.03 seconds (1:16:25.03) 2.5.52 40 60 3771.85 seconds (1:02:51.85) 2.5.52 64 60 840.41 seconds (0:14:00.41) 2.5.52 80 60 788.65 seconds (0:13:08.65) 2.5.52 96 60 779.54 seconds (0:12:59.54) 2.5.52 all 60 768.98 seconds (0:12:48.98) 2.5.52 24 80 4285.98 seconds (1:11:25.98) 2.5.52 40 80 3342.82 seconds (0:55:42.82) 2.5.52 64 80 828.59 seconds (0:13:48.59) 2.5.52 80 80 790.54 seconds (0:13:10.54) 2.5.52 96 80 782.86 seconds (0:13:02.86) 2.5.52 all 80 770.43 seconds (0:12:50.43) 2.5.52 24 100 3633.64 seconds (1:00:33.64) 2.5.52 40 100 855.22 seconds (0:14:15.22) 2.5.52 64 100 833.92 seconds (0:13:53.92) 2.5.52 80 100 793.79 seconds (0:13:13.79) 2.5.52 96 100 778.81 seconds (0:12:58.81) 2.5.52 all 100 771.76 seconds (0:12:51.76) -- ______________________________________________ http://www.linuxmail.org/ Now with POP3/IMAP access for only US$19.95/yr Powered by Outblaze - 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/