Re: [PATCH 0/4] paravirt clock patches

Marcelo Tosatti
2008-04-28T19:28:16Z

On Thu, Apr 24, 2008 at 10:37:04AM +0200, Gerd Hoffmann wrote:
> Hi folks,
>
> My first attempt to send out a patch series with git ...
>
> The patches fix the kvm paravirt clocksource code to be compatible with
> xen and they also factor out some code which can be shared into a
> separate source files used by both kvm and xen.

The issue with SMP guests is still present. Booting with "nohz=off" resolves it.

Same symptoms as before, apic_timer_fn for one of the vcpu's is ticking way slower
than the remaining ones:

[root@localhost ~]# cat /proc/timer_stats | grep apic
391, 4125 qemu-system-x86 apic_mmio_write (apic_timer_fn)
2103, 4126 qemu-system-x86 apic_mmio_write (apic_timer_fn)
1896, 4127 qemu-system-x86 apic_mmio_write (apic_timer_fn)
1857, 4128 qemu-system-x86 apic_mmio_write (apic_timer_fn)

Let me know what else is needed, or any patches to try.