Re: Weird clock behaviour with current (amd64) kernel

[Joerg Sonnenberger <joerg%bec.de@localhost>]

On Sun, Aug 14, 2022 at 02:38:07AM +0700, Robert Elz wrote:
> To avoid delays in a message turnaround, this is what sysctl says is
> available (this output is from a normal boot, not the PCIDUMP one).
> 
> kern.timecounter.choice = TSC(q=3000, f=3417601000 Hz) clockinterrupt(q=0, f=100 Hz) lapic(q=-100, f=38400000 Hz) hpet0(q=2000, f=19200000 Hz) ACPI-Fast(q=1000, f=3579545 Hz) i8254(q=100, f=1193182 Hz) dummy(q=-1000000, f=1000000 Hz)

I'm more wondering about the LAPIC frequency here. That one is normally
used to drive the clockintr and if that frequency is off, interrupt rate
would be off too. Does the interrupt rate match HZ?

Joerg