Re: [kvm-devel] [PATCH 0/4] paravirt clock patches

[Marcelo T. <mto...@re...>]

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.