From owner-freebsd-hackers Mon Oct 30 07:09:43 1995 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id HAA25310 for hackers-outgoing; Mon, 30 Oct 1995 07:09:43 -0800 Received: from zibbi.mikom.csir.co.za (zibbi.mikom.csir.co.za [146.64.24.58]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id HAA25297 for ; Mon, 30 Oct 1995 07:09:28 -0800 Received: (from jhay@localhost) by zibbi.mikom.csir.co.za (8.6.12/8.6.9) id RAA13876; Mon, 30 Oct 1995 17:07:14 +0200 From: John Hay Message-Id: <199510301507.RAA13876@zibbi.mikom.csir.co.za> Subject: Re: network priority changed? To: henrich@crh.cl.msu.edu (Charles Henrich) Date: Mon, 30 Oct 1995 17:07:14 +0200 (SAT) Cc: freebsd-hackers@freebsd.org In-Reply-To: <199510292355.SAA00444@crh.cl.msu.edu> from "Charles Henrich" at Oct 29, 95 06:55:06 pm X-Mailer: ELM [version 2.4 PL23] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 858 Sender: owner-hackers@freebsd.org Precedence: bulk > > Ever since 2.0.5 my systems running with ISA network cards (SMC Ultra's) havent > been nearly as fast as with 2.0.5, (650k/sec peak instead of 980k/sec peak) as > well as getting messages like so on the console fairly frequently during heavy > network activity: > > ed0: warning - receiver ring buffer overrun > > Leading me to believe that the priority of the network (ISA?) handlers were > lowered since 2.0.5. Am I way off base here? If so, what tunables would one > suggest to get the performance back up to snuff.. > The if_ed driver has a bug in probing some SMC Ultra (the 8216's) cards. It probes them as 8416's which has only 8Kbyte RAM. This has a very bad efect on the performance. The short term fix is to boot with the "-c" option and specify the iosize as 16384. This should fix the problem. John -- John Hay -- John.Hay@csir.co.za