Re: [Xen-devel] [RFC][PATCH] KVM: APPLES can improve the performance of applications and virtualized systems by up to 49%

[Dario Faggioli]

On Sat, 2018-05-12 at 16:27 +0800, Weiwei Jia wrote:
> We already have a prototype implementation based on KVM (Linux Kernel
> 3.19.8). Our patch for Linux Kernel 3.19.8 and the paper describing
> our idea are available in Github repository [1][2][3]. We are pleased
> to revise our patch in order to merge it into Linux/KVM and XEN. We
> hope that you can test and adopt our approach/techniques. We are
> pleased to get some comments/suggestions on the approach and on how
> the idea can be adopted/tested by Linux/KVM and XEN. Thank you.
> 
To see how this is being handled in Xen currently, I suggest you to
grep for:
 ple_gap
 ple_window
 SECONDARY_EXEC_PAUSE_LOOP_EXITING
 EXIT_REASON_PAUSE_INSTRUCTION
 pauseloop_exits

I am aware of your paper, but I haven't got to being able to read it
carefully yet. I'll do that (but can't promise when).

Regards,
Dario
-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
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Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Software Engineer @ SUSE https://www.suse.com/

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