Date: Tue, 20 Mar 2001 09:48:37 -0800 From: Ted Faber <faber@ISI.EDU> To: "Michael C . Wu" <keichii@peorth.iteration.net> Cc: Alfred Perlstein <bright@wintelcom.net>, "Michael C . Wu" <keichii@iteration.net>, dillon@FreeBSD.ORG, grog@FreeBSD.ORG, fs@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: tuning a VERY heavily (30.0) loaded server Message-ID: <20010320094837.B1284@ted.isi.edu> In-Reply-To: <20010320113818.B52586@peorth.iteration.net>; from keichii@iteration.net on Tue, Mar 20, 2001 at 11:38:18AM -0600 References: <20010320111144.A51924@peorth.iteration.net> <20010320092717.R29888@fw.wintelcom.net> <20010320113818.B52586@peorth.iteration.net>
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--BwCQnh7xodEAoBMC Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Mar 20, 2001 at 11:38:18AM -0600, Michael C . Wu wrote: > On Tue, Mar 20, 2001 at 09:27:17AM -0800, Alfred Perlstein scribbled: > | * Michael C . Wu <keichii@iteration.net> [010320 09:11] wrote: > | > Physical memory is 2.5 GB. We do MFS and it croaks/crashes > | > at midnight, our peak load time. We do md0, it croaks before > | > peak time. > | > | Explain the crash. What is md0/MFS being used for? Why do you > | need it? > > 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 Forgive me if this is a stupid question, but how much swap is there on this machine? Is the combination of the packed MFS and high process load exhausting your swap? --BwCQnh7xodEAoBMC Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.4 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE6t5f1aUz3f+Zf+XsRAnKTAKD2KfRmKT5xISmnSw92iVPTxdGTtgCffv16 V6TK3KKHF799LzyDTMhxu7o= =PUFq -----END PGP SIGNATURE----- --BwCQnh7xodEAoBMC-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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