Re: [kvm-ppc-devel] virtio-net working on PowerPC KVM

Avi Kivity
2008-03-31T08:28:11Z

Alexander Graf wrote:
>
> On Mar 31, 2008, at 9:43 AM, Avi Kivity wrote:
>
>> Alexander Graf wrote:
>>>
>>> I am experiencing 7-8ms ping latencies (native 0.1ms) on x86_64 as
>>> well, when pinging the virtual machine. Maybe it's not related to
>>> PowerPC? Is it supposed to be that slow?
>>
>> If you have a really old host kernel, or a misconfigured one, it can
>> happen. What's your host kernel? are you using hrtimers?
>
> This is a 2.6.22 SUSE kernel. As far as I can see
> CONFIG_HIGH_RES_TIMERS is not set.
>

An alternative is -clock hpet or -clock rtc.

> Guess it's my fault then - nevertheless a warning when starting kvm
> would be nice.

Yes, indeed.

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.