From owner-freebsd-isp Fri May 23 20:46:43 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id UAA03939 for isp-outgoing; Fri, 23 May 1997 20:46:43 -0700 (PDT) Received: from panda.hilink.com.au (panda.hilink.com.au [203.2.144.5]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id UAA03933 for ; Fri, 23 May 1997 20:46:39 -0700 (PDT) Received: (from danny@localhost) by panda.hilink.com.au (8.8.5/8.8.5) id NAA09270; Sat, 24 May 1997 13:46:19 +1000 (EST) Date: Sat, 24 May 1997 13:46:18 +1000 (EST) From: "Daniel O'Callaghan" To: Jack Wenger cc: freebsd-isp@FreeBSD.ORG Subject: Re: Clients per Bandwidth In-Reply-To: <199705240308.WAA22120@msn2.globaldialog.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-isp@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Fri, 23 May 1997, Jack Wenger wrote: > I'm trying to figure out how many virtual domains to put on a 128 ISDN > connected box. I've got a P133 w/ 64Mb ram, and a good fast SCSI subsystem. > So, is there a decent way to figure out when I need to move up the bandwidth > ladder? > In other words, I wanna know how many concurrent requests I can handle. We > DON'T have anyone dialing in, just hosting web sites. You can work it out yourself. Average request is 10-15 kbytes. 128k ISDN can handle 60 MB/hour at 100%. To stay within the comfort range say 30 MB/hour, or 2-3000 requests/hour. It really is pretty basic mathematics, and you should also play around with the figures to work out how much each average request costs you to deliver in bandwidth terms. You should consider selling some *inbound* services (not a lot, but some) or else you will be only half utilising your paid-for capacity. Danny