Date: Mon, 30 Oct 1995 17:07:14 +0200 (SAT) From: John Hay <jhay@mikom.csir.co.za> To: henrich@crh.cl.msu.edu (Charles Henrich) Cc: freebsd-hackers@freebsd.org Subject: Re: network priority changed? Message-ID: <199510301507.RAA13876@zibbi.mikom.csir.co.za> In-Reply-To: <199510292355.SAA00444@crh.cl.msu.edu> from "Charles Henrich" at Oct 29, 95 06:55:06 pm
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> > 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
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