Date: Sat, 30 Oct 2004 11:18:24 -0400 From: "R. Payette" <premi@altern.org> To: Eric Anderson <anderson@centtech.com> Cc: freebsd-performance@freebsd.org Subject: Re: Disk buffer / memory utilization Message-ID: <F1484BB8-2A86-11D9-90C5-0030658DC702@altern.org> In-Reply-To: <417E54E9.7030401@centtech.com> References: <0327434A-26F4-11D9-A907-0030658DC702@altern.org> <417E54E9.7030401@centtech.com>
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I've read and tried the tuning man page ( i've gained 2-3 M on the wired ). This is typical top output during a build process. It's running awfully slow because the system spend most of it's time swapping, while there still is that 14M Buf. CPU states: 4.7% user, 0.0% nice, 13.6% system, 1.9% interrupt, 79.8% idle Mem: 29M Active, 5696K Inact, 20M Wired, 3208K Cache, 14M Buf, 404K Free Swap: 128M Total, 68M Used, 59M Free, 53% Inuse, 4184K In, 2448K Out PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND 10282 root -20 0 74700K 27336K swread 0:21 21.42% 20.41% cc1plus 193 root 96 0 4284K 1536K select 108:52 0.98% 0.98% ppp What happened with 16-32M ram unix servers ? what's so big in modern unix that make it unusable on low-end hardware ? How do you build kernels that fit on a floppy ( mine is 3.3 M and I thought I removed everything that could be removed from the kernel config file ) freebsd 5.3rc1 p2 350 de ethernet card ( generic dec 21041 card ) ide 4.3G hd 64M ram kernel config : http://massonerie.kicks-ass.org/kc Sorry if it's kind of a newbie question. I feel that I'm overlooking something big not just finetuning thanks for any help > > I would strongly suggest reading the 'tuning' man page - it's really > pretty good, and should answer some of your questions (maybe not > specifically, but indirectly about tuning some sysctl's and such). > > Which such a small amount of memory, you're going to have to work > harder at getting it just right. > > You should also mention what you are trying to make perform well on > this system, what version of FreeBSD, and maybe also the hardware > information. > > Eric > > > > -- > ------------------------------------------------------------------ > Eric Anderson Sr. Systems Administrator Centaur Technology > Talk sense to a fool and he calls you foolish. > ------------------------------------------------------------------ >
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