Date: Wed, 11 Jun 1997 11:50:37 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: dyson@FreeBSD.ORG Cc: bob@luke.pmr.com, dg@root.com, freebsd-smp@FreeBSD.ORG Subject: Re: What 100mbps ethernet card(s) to use w/SMP? Message-ID: <199706111850.LAA06444@phaeton.artisoft.com> In-Reply-To: <199706111549.KAA05815@dyson.iquest.net> from "John S. Dyson" at Jun 11, 97 10:49:43 am
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> > > Interrupts simply aren't working correctly on your machine. It's not > > > a problem with the cards you're plugging in, it's a problem with interrupt > > > (perhaps APIC) configuration. > > > > Any idea why it would only effect the ethernet adapters and not the > > scsi adapters? Are there any BIOS setup things to check for that > > might cause this? > > > I had a really wierd networking problem on a new system last week > at work. The system had an Intel ethernet adaptor, and was basically > a typical PC. I had to reset the bios from scratch and things started > working... I have NO idea as to what was going on, but two PCI devices > were being mapped to the same IRQ before when the problem manifested > itself. When the problem went away, all of the devices had seperate > IRQs. Shared PCI interrupts have problems working on some SMP boxes, and always have. The "5th slot" thing is a screwup because it forces sharing (the interrupt lines are typically grabbed in order in the slot, and with only 4 lines, you only have 4 linear orderings, so one of the slots has to duplicate one of the other slots). Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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