On Thu, 26 May 2016 12:26:27 +0200 Paolo Bonzini <[email protected]> wrote:
> > > On 25/05/2016 04:47, Wanpeng Li wrote: > > From: Wanpeng Li <[email protected]> > > > > If an emulated lapic timer will fire soon(in the scope of 10us the > > base of dynamic halt-polling, lower-end of message passing workload > > latency TCP_RR's poll time < 10us) we can treat it as a short halt, > > and poll to wait it fire, the fire callback apic_timer_fn() will set > > KVM_REQ_PENDING_TIMER, and this flag will be check during busy poll. > > This can avoid context switch overhead and the latency which we wake > > up vCPU. > > As discussed on IRC, I would like to understand why the adaptive Glad to know the IRC channel. Is #kvm channel on freenode the IRC you are talking about? Thanks --jyh
