Strange 'hangs' with RELENG_9

[Andriy Gapon]

on 19/01/2012 21:24 László Károlyi said the following:
> On 2012.01.19., at 18:18, Andriy Gapon wrote:
> 
>> Please provide output of the following sysctls:
>> sysctl kern.eventtimer
>> sysctl kern.timecounter
> 
> 
> [root at sys ~]# sysctl kern.eventtimer
> kern.eventtimer.choice: HPET(450) HPET1(450) HPET2(450) LAPIC(400) i8254(100) RTC(0)
> kern.eventtimer.et.LAPIC.flags: 15
> kern.eventtimer.et.LAPIC.frequency: 0
> kern.eventtimer.et.LAPIC.quality: 400
> kern.eventtimer.et.i8254.flags: 1
> kern.eventtimer.et.i8254.frequency: 1193182
> kern.eventtimer.et.i8254.quality: 100
> kern.eventtimer.et.HPET.flags: 3
> kern.eventtimer.et.HPET.frequency: 14318180
> kern.eventtimer.et.HPET.quality: 450
> kern.eventtimer.et.HPET1.flags: 3
> kern.eventtimer.et.HPET1.frequency: 14318180
> kern.eventtimer.et.HPET1.quality: 450
> kern.eventtimer.et.HPET2.flags: 3
> kern.eventtimer.et.HPET2.frequency: 14318180
> kern.eventtimer.et.HPET2.quality: 450
> kern.eventtimer.et.RTC.flags: 17
> kern.eventtimer.et.RTC.frequency: 32768
> kern.eventtimer.et.RTC.quality: 0
> kern.eventtimer.periodic: 0
> kern.eventtimer.timer: HPET
> kern.eventtimer.idletick: 0
> kern.eventtimer.singlemul: 2
> [root at sys ~]# sysctl kern.timecounter
> kern.timecounter.tick: 1
> kern.timecounter.choice: TSC-low(800) HPET(950) i8254(0) ACPI-fast(900) dummy(-1000000)
> kern.timecounter.hardware: HPET
> kern.timecounter.stepwarnings: 0
> kern.timecounter.tc.ACPI-fast.mask: 4294967295
> kern.timecounter.tc.ACPI-fast.counter: 3649705857
> kern.timecounter.tc.ACPI-fast.frequency: 3579545
> kern.timecounter.tc.ACPI-fast.quality: 900
> kern.timecounter.tc.i8254.mask: 65535
> kern.timecounter.tc.i8254.counter: 27536
> kern.timecounter.tc.i8254.frequency: 1193182
> kern.timecounter.tc.i8254.quality: 0
> kern.timecounter.tc.HPET.mask: 4294967295
> kern.timecounter.tc.HPET.counter: 1224089625
> kern.timecounter.tc.HPET.frequency: 14318180
> kern.timecounter.tc.HPET.quality: 950
> kern.timecounter.tc.TSC-low.mask: 4294967295
> kern.timecounter.tc.TSC-low.counter: 1655163352
> kern.timecounter.tc.TSC-low.frequency: 11772185
> kern.timecounter.tc.TSC-low.quality: 800
> kern.timecounter.smp_tsc: 1
> kern.timecounter.invariant_tsc: 1

I wonder whether there could be an interference between HPET being used as
timecounter and HPET being used as an event timer.
Alexander, what do you think?

László, can you please try changing kern.timecounter.hardware to TSC-low or
ACPI-fast?

-- 
Andriy Gapon