From owner-freebsd-fs Tue Mar 20 10: 2:31 2001 Delivered-To: freebsd-fs@freebsd.org Received: from peorth.iteration.net (peorth.iteration.net [208.190.180.178]) by hub.freebsd.org (Postfix) with ESMTP id 2E40237B73F; Tue, 20 Mar 2001 10:02:26 -0800 (PST) (envelope-from keichii@peorth.iteration.net) Received: by peorth.iteration.net (Postfix, from userid 1001) id 3E35359283; Tue, 20 Mar 2001 12:01:12 -0600 (CST) Date: Tue, 20 Mar 2001 12:01:12 -0600 From: "Michael C . Wu" To: izero@ms26.hinet.net, cross@math.psu.edu Cc: Alfred Perlstein , "Michael C . Wu" , dillon@FreeBSD.ORG, grog@FreeBSD.ORG, fs@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: tuning a VERY heavily (30.0) loaded scerver Message-ID: <20010320120112.C52586@peorth.iteration.net> Reply-To: "Michael C . Wu" References: <20010320111144.A51924@peorth.iteration.net> <20010320092717.R29888@fw.wintelcom.net> <20010320113818.B52586@peorth.iteration.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20010320113818.B52586@peorth.iteration.net>; from keichii@iteration.net on Tue, Mar 20, 2001 at 11:38:18AM -0600 X-PGP-Fingerprint: 5025 F691 F943 8128 48A8 5025 77CE 29C5 8FA1 2E20 X-PGP-Key-ID: 0x8FA12E20 Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org MRTG Graph at http://zoonews.ee.ntu.edu.tw/mrtg/zoo.html | | FreeBSD zoo.ee.ntu.edu.tw 4.2-STABLE FreeBSD 4.2-STABLE | #0: Tue Mar 20 11:10:46 CST 2001 root@:/usr/src/sys/compile/SimFarm i386 | | | > system stats at | | > http://zoo.ee.ntu.edu.tw/~keichii/ | md0/MFS is used for caching the articles that BBS users read. | They often read the same articles over and over again, | and we find that a 128MB MFS/md0 will have 70% hitrate | | When our MFS/md0 fills up after long usage, the box easily | dies. (We crontab clean the mfs, but sometimes the load | shoots up for no reason and is not able to clean the mfs in time.) | If we dont do this cache, the data for the bulletin boards | Another problem is that we have around 4000+ processes accessing lots of SHM at the same time.. The *UGLY* source code for the BBS is at http://zoo.ee.ntu.edu.tw/~keichii/zoo_bbsd_src.tgz We can only provide crash dumps for trusted people because of the thousands of passwords in the dump. -- +-----------------------------------------------------------+ | keichii@iteration.net | keichii@freebsd.org | | http://iteration.net/~keichii | Yes, BSD is a conspiracy. | +-----------------------------------------------------------+ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message