From owner-freebsd-net Sat Sep 2 21:38:40 2000 Delivered-To: freebsd-net@freebsd.org Received: from avocet.prod.itd.earthlink.net (avocet.prod.itd.earthlink.net [207.217.121.50]) by hub.freebsd.org (Postfix) with ESMTP id CDDF037B424 for ; Sat, 2 Sep 2000 21:38:38 -0700 (PDT) Received: from nukemhigh (hybrid-024-221-117-152.phoenix.speedchoice.com [24.221.117.152]) by avocet.prod.itd.earthlink.net (8.9.3-EL_1_3/8.9.3) with SMTP id VAA24762 for ; Sat, 2 Sep 2000 21:38:34 -0700 (PDT) Message-Id: <200009030438.VAA24762@avocet.prod.itd.earthlink.net> X-Sender: egravel@mail.earthlink.net X-Mailer: QUALCOMM Windows Eudora Pro Version 4.0 Date: Sat, 02 Sep 2000 21:44:17 -0700 To: freebsd-net@freebsd.org From: Emmanuel Gravel Subject: Increasing network performance Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org I have a few machines in network. I'm using FreeBSD as my NAT/firewall. The NIC's in the FreeBSD box are 3c509B's. It's a P90 with 32 MB of RAM, and at least double of swap. Not running any caching/proxy servers, unless you consider NAT as a proxy. When exchanging files between my FreeBSD box and others on the network, and no Internet traffic, at maximum I've seen ~ 250 KB/s (not quite 2 Mb/s) transfer rates. When I get Internet traffic, the transfer rate goes way down if I also try to transfer files, and I get strange behaviour from the network. Traffic happens in bursts, which seem usually (but not always) disrupted by collisions, and usually there's a fairly long pause (a few seconds) before traffic starts again. I would think part of it has to do with the system being dual-homed, with two 509's, but I'm sure there has to be something to do to improve performance somehow. Does anyone know where I should look to get my box to react a little more sanely? If there's anything else you want to know just ask :) Thanks! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message