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Date:      Mon, 28 Sep 1998 01:40:26 -0500 (CDT)
From:      Kevin Day <toasty@home.dragondata.com>
To:        jkb@best.com (Jan B. Koum)
Cc:        clash@tasam.com, freebsd-hardware@FreeBSD.ORG
Subject:   Re: Server Stability not good anymore
Message-ID:  <199809280640.BAA00519@home.dragondata.com>
In-Reply-To: <Pine.BSF.4.02A.9809272237330.17093-100000@shell6.ba.best.com> from "Jan B. Koum" at "Sep 27, 98 10:45:23 pm"

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> 
> On Mon, 28 Sep 1998, Joe Gleason wrote:
> 
> >You would think that 640mb is exesive, but you have never run a shell server
> >then. ;-)
> >I do need it.  At 512mb, I was swaping a good 30mb to disk.
> >
> >Right now, I am agreeing with your conclusion.
> >
> 
> 	I beg to differ. I have ran a shell server before and still do run
> a couple. They might not have as many users/jobs as your server however. 
> 	OTOH, my ISP (best.com) runs heave HEAVE loaded servers. They do
> all: shell, web, ftp, telnet, pop, imap, etc. But they are not throwing all
> their users into a single system - instead they are putting about 2000
> users per box. The boxes are PPro200s with 128MB of RAM. They usually have
> 150-200 users on line at any time (this is logged in users + pop/imap/web
> users) per system. One of their head engineers (who is also a FreeBSD
> developer) wrote an article recently for Newsletter #2 about FreeBSD use
> in ISP like environment. Check out:
> ftp://ftp.freebsd.org/pub/FreeBSD/newsletter/
> 	How many users do you have on your system? If it less then 5000
> you should be fine with 512 or less MB of ram (unless the all like to run
> emacs at the same time *grin*)
> 

To add some data:

Right now, 8 users logged in, 103 eggdrops running, 15 bnc's running, and
god only knows what else they've decided to run:

shell1# top
last pid: 28349;  load averages:  0.57,  0.30,  0.51             01:36:44
176 processes: 1 running, 172 sleeping, 3 zombie
CPU states:  2.7% user,  0.0% nice,  0.8% system,  1.2% interrupt, 95.3% idle
Mem: 214M Active, 12M Inact, 46M Wired, 41M Cache, 8342K Buf, 63M Free
Swap: 256M Total, 128K Used, 256M Free

(all web/mail/etc is done on another server)

We've got 384MB of ram in the box right now - seems to be handling the
bursts we get of 5 users deciding to compile something with -j4 at once. :)

The PII/400 we're using now seems to be overkill, but our users aren't
exactly complaining. :)


Kevin Day
DragonData

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