Date: Fri, 23 Jul 1999 23:18:27 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: grady@xcf.berkeley.edu (Steven Grady) Cc: freebsd-smp@FreeBSD.ORG Subject: Re: slow network reading with SMP Message-ID: <199907232318.QAA14623@usr09.primenet.com> In-Reply-To: <19990723044445.2C90A14FAE@hub.freebsd.org> from "Steven Grady" at Jul 22, 99 09:17:39 pm
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[ ... 50k/S vs. 6M/S ... ] > The only difference between the kernels was the deletion of the following > lines: > options SMP > options APIC_IO > > Why is this happening? And more importantly, what can we do to use > both processors while still keeping full network speed? (Others in the > company have mentioned Linux -- I'd like to avoid that.) You should diff the dmesg output for both kernels. Let us know it it is complaining about the clock not being routed via APIC. There is another configuration option (see LINT) that will let you fix this, if this is the case. There are also a number of BIOS settings that can effect the performance. Specifically, there are BIOS' where you can select an OS by name; I believe "UnixWare" works best on most of these, but I can't be specific as to what you should select to make the BIOS happy without detailed knowledge of your BIOS (if you obtain that, your in a better positition to decide, anyway). Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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