Steven Seeger wrote:
Jan, have patience my friend. I will be reporting bugs regarding LTTtonight. ;) I have a day job that unfortunately requires my expertise.
You have many fires to fight, I understand. :)
I have local APIC disabled in the kernel because we don't seem to have one. I see context switches like these whether or not I use idle=poll, and thus the TSC. Here's my /proc/xenomai/timer: status=on+watchdog:setup=3:clock=40035659193:timerdev=pit:clockdev=tsc It seems that idle=poll didn't prevent the tsc from being marked as unstable despite what the mailing lists say.
But Xenomai picks it independent of Linux' decision as its clockdev - so their might be glitches between the time bases of pit and tsc. You should try to build your kernel with CONFIG_M586. That will make Xenomai pick the PIT for time keeping too.
If TSC is truly broken on your box, you cannot gain anything with keeping it for Xenomai.
Jan
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