Rusty Dekema wrote:
How do you get your system to use IO-APIC style interrupts? I am
running linux-2.6.14 and have enabled "Local APIC support on
uniprocessors" and "IO-APIC support on uniprocessors" in the kernel
options, but /proc/interrupts says that everything is using XT-PIC. I
am running an Intel P3-1200 CPU although I forget what chipset the
machine has. Is there an option in the BIOS of a typical Intel machine
that needs to be enabled in order for this to work?
This has not been a problem in the past as I have been using only SIP
and IAX connections. But I have ordered a digium TDM card and will be
installing it tomorrow, and I would like to head off any potential
problems if possible.
-Rusty
Run "dmesg". Do you see something like:
Local APIC disabled by BIOS -- you can enable it with "lapic"
If so, there may be something in your bios. Or try appending 'lapic' to
your kernel boot parameters in grub / lilo. 'lapi' will try to override
the bios setting and use io-apic.
My results have been mixed. On older machines using 'lapic' as a kernel
boot parameter produces a message in dmesg that indicates it is
overriding bios, but I still only get XT-APIC.
Cheers,
Kevin
--
Optimacy Communications, LLC
http://www.optimacycomm.com
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