Date: Wed, 18 Feb 1998 08:21:08 +1100 (EST) From: "Daniel O'Callaghan" <danny@panda.hilink.com.au> To: John Kelly <jak@cetlink.net> Cc: Doug White <dwhite@resnet.uoregon.edu>, freebsd-isp@FreeBSD.ORG, freebsd-questions <freebsd-questions@FreeBSD.ORG> Subject: Re: FreeBSD as router, terminal server Message-ID: <Pine.BSF.3.91.980218081905.776D-100000@panda.hilink.com.au> In-Reply-To: <34e98ccb.899122@mail.cetlink.net>
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On Tue, 17 Feb 1998, John Kelly wrote: > On Mon, 16 Feb 1998 23:13:55 -0800 (PST), Doug White > <dwhite@gdi.uoregon.edu> wrote: > > >On Mon, 16 Feb 1998, Gary Dunn wrote: > > > >> I am developing alternatives for an ISP start-up. A typical ISP involves > >> a unix server, a router, and a terminal server. It seems to me that a > >> reasonably fast Pentium should be able to perform the routing and > >> terminal service, at least in the early stages of growth. > >> > >> Am I over-estimating performance? > > > >You'll outgrow that pretty quickly, servicing serial ports can eat CPU > >significantly. > > Anybody have experience with Comrtol Rocketport multiport serial > adapters and how many ports they can run on one box? Comtrol is interruptless, so you should be able to put 64 or 128 in a box. However, there is a big difference between using kernel pppd and userland ppp. The latter eats CPU, the former is much better because of the fewer context switches. I have 30 pppd lines on a 486-100, and it is happy. I use cyclades and AST/4 port cards. Danny To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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