Re: [PATCH v3] KVM: halt-polling: poll if emulated lapic timer will fire soon

From: Wanpeng Li
Date: Thu May 26 2016 - 04:05:18 EST

2016-05-24 2:01 GMT+08:00 David Matlack <dmatlack@xxxxxxxxxx>:
> On Sun, May 22, 2016 at 5:42 PM, Wanpeng Li <kernellwp@xxxxxxxxx> wrote:
>> From: Wanpeng Li <>
> I'm ok with this patch, but I'd like to better understand the target
> workloads. What type of workloads do you expect to benefit from this?

In addition, as Paolo great pointed out, the upcoming vmx
preemption timer also can get benefit, preemption time will just
switch to hrtimer if block, if the remaining expire time is enough
small and there is just a single task in this pCPU, poll will cut the

Wanpeng Li