Jayson Vantuyl wrote:
On Fri, Dec 10, 2004 at 10:18:17AM -0500, David Cook wrote:
With regards to the IRQ sharing situation on 400P/X100P cards how would I know if I can use IO-APIC?
I am running RHEL 3 on a Dell PowerEdge 1400SC. RHEL installs without IO-APIC support. Is this because RH is overly conservative or because it queried my machine and that is the appropriate option?
Does RHEL 3 have a kernel for IO-APIC if appropriate or am I expected to do a custom kernel build to get there from here?
dbc.
Mmmmm. I know you can determine if you're using an IOAPIC by cat'ing /proc/interrupts. It should say what interrupt controller is being used by each interrupt.
Whenever I have interrupt problems, I boot up with "noapic" on the
command line. That forces XT-PIC support, so it may help you debug.
I suspect, that it is just a big APIC myth.
I've used TDM400P in APIC server (lspci was showing IO-APIC-edge and IO-APIC-level), though the problems were identical to the server with XT-PIC chipset.
Sincerely, Andrei
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