SMP P4 APIC/interrupt balancing

From: James Bourne (jbourne@MtRoyal.AB.CA)
Date: Tue Apr 16 2002 - 17:29:32 EST

Hi All,
Ok, we have a Dell PE4600 with dual P4X processors. It will not balance
interrupts between the two cpus, CPU0 always receives the bulk
of the interrupts, although both processors are being utilized
by processes on the system. This system is not yet in production, so I
have some time to try things on it.

Current kernel is 2.4.18 with the LSE APIC Routing patch
(http://sourceforge.net/projects/lse). 2.4.18 stock (well ok, -rc4) has
much the same results.

I have tried Ingos' patch from early Feb and it managed to hang the system
on CPU0 initialization...

This is a newer system and uses the ServerWorks GCHE South Bridge I
believe, dmesg actually comes up with a few unknown devices.

I'm attaching dmesg output, .config, lspci -v output, and output
from /proc/cpuinfo and /proc/interrupts.

If anything else is needed, just let me know.

Thanks and Regards,
James Bourne 

-- 
James Bourne, Supervisor Data Centre Operations
Mount Royal College, Calgary, AB, CA
www.mtroyal.ab.ca

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