Re: [PATCH] KVM: LAPIC: Periodically revaluate appropriate lapic_timer_advance_ns

[Paolo Bonzini]

On 09/08/19 07:45, Wanpeng Li wrote:
> From: Wanpeng Li <wanpengli@xxxxxxxxxxx>
> 
> Even if for realtime CPUs, cache line bounces, frequency scaling, presence 
> of higher-priority RT tasks, etc can cause different response. These 
> interferences should be considered and periodically revaluate whether 
> or not the lapic_timer_advance_ns value is the best, do nothing if it is,
> otherwise recaluate again. 

How much fluctuation do you observe between different runs?

Paolo