From owner-freebsd-small Sun May 31 16:29:59 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id QAA12884 for freebsd-small-outgoing; Sun, 31 May 1998 16:29:59 -0700 (PDT) (envelope-from owner-freebsd-small@FreeBSD.ORG) Received: from host02.net.voyager.co.nz (root@host02.net.voyager.co.nz [203.21.30.125]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id QAA12758 for ; Sun, 31 May 1998 16:29:04 -0700 (PDT) (envelope-from michaelh@earthling.net) Received: from heartofgold.pcmedia.nzl.com (pcmedia.nzl.com [203.21.25.125]) by host02.net.voyager.co.nz (8.8.8/8.6.12) with ESMTP id LAA13351; Mon, 1 Jun 1998 11:28:50 +1200 (NZST) Received: from localhost (michaelh@localhost) by heartofgold.pcmedia.nzl.com (8.8.4/8.8.4) with SMTP id LAA12273; Mon, 1 Jun 1998 11:31:07 +1200 X-Authentication-Warning: heartofgold.pcmedia.nzl.com: michaelh owned process doing -bs Date: Mon, 1 Jun 1998 11:31:07 +1200 (NZST) From: Michael Hope X-Sender: michaelh@heartofgold.pcmedia.nzl.com To: Julian Elischer cc: Malartre , small@FreeBSD.ORG Subject: Re: i386 has a Firewall In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-small@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > a 386sx16 would be so much faster than the ppp link that doing packet > filtering on the way through is hardly likeley to change much :-) Unfortunatly not in my experiance. While on the face of it 16MHz is a hell of a lot faster than 33.6kHz, the time taken to service an interrupt, process the packet and send it on combined with the margin needed so that you dont loose any bytes while doing something else means that you need a 486 to do it safely. The best I've ever gotten out of a 386SX-20 with a 16450 UART was 1.0k/second. It actually ran better with the port speed set to 9600 as not no many bytes were lost! -- Michael To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-small" in the body of the message