On Sun, Aug 07, 2005 at 01:36:01PM +0200, Andi Kleen wrote:
> Erick Turnquist <[email protected]> writes:
>
> > Hi, I'm running an Athlon64 X2 4400+ (a dual core model) with an
> > nVidia GeForce 6800 Ultra on a Gigabyte GA-K8NXP-SLI motherboard and
> > getting nasty messages like these in my dmesg:
> >
> > warning: many lost ticks.
> > Your time source seems to be instable or some driver is hogging interupts
> > rip default_idle+0x20/0x30
>
> It's most likely bad SMM code in the BIOS that blocks the CPU too long
> and is triggered in idle. You can verify that by using idle=poll
> (not recommended for production, just for testing) and see if it goes away.
>
> No way to fix this, but you can work around it with very new kernels
> by compiling with a lower HZ than 1000.
Some BIOSes do not lock SMM, and you *could* turn it off at the chipset
level.
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