Re: kern/55247: Recent tsc changes make clock race (1 hour per day)

[SAITOH Masanobu <msaitoh%execsw.org@localhost>]

On 2020/05/09 4:15, christos%astron.com@localhost wrote:
> > Number:         55247
> > Category:       kern
> > Synopsis:       Recent tsc changes make clock race (1 hour per day)
> > Confidential:   no
> > Severity:       serious
> > Priority:       medium
> > Responsible:    kern-bug-people
> > State:          open
> > Class:          sw-bug
> > Submitter-Id:   net
> > Arrival-Date:   Fri May 08 19:15:00 +0000 2020
> > Originator:     Christos Zoulas
> > Release:        NetBSD 9.99.60
> > Organization:
> 	Racing Clocks Inc.
> > Environment:
> System: NetBSD quasar.astron.com 9.99.60 NetBSD 9.99.60 (QUASAR) #165: Tue May 5 20:44:19 EDT 2020 christos%quasar.astron.com@localhost:/usr/src/sys/arch/amd64/compile/QUASAR amd64
> Architecture: x86_64
> Machine: amd64
> > Description:
>
> 	Ntp refuses to sync since the clock is racing too fast.
>
> > How-To-Repeat:
>          Manufacturer: Dell Inc.
>          Product Name: Precision 5820 Tower
> 	kern.timecounter.choice = TSC(q=3000, f=3850000000 Hz) clockinterrupt(q=0, f=4000 Hz) hpet0(q=2000, f=24000000 Hz) ACPI-Fast(q=1000, f=3579545 Hz) lapic(q=-100, f=25000000 Hz) i8254(q=100, f=1193182 Hz) dummy(q=-1000000, f=1000000 Hz)
>
> > Fix:
> 	sysctl -w kern.timecounter.hardware=hpet0

Cold you try x86/cpu.c rev. 1.191?

And also please show the following info:

- full dmesg
- cpuctl -v identify 0

Thanks in advance.


--
-----------------------------------------------
                SAITOH Masanobu (msaitoh%execsw.org@localhost
                                 msaitoh%netbsd.org@localhost)