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From: Weiwei Jia <>
	Weiwei Jia <>
Subject: [RFC][PATCH] KVM: APPLES can improve the performance of applications and virtualized systems by up to 49%
Date: Sat, 12 May 2018 16:27:04 +0800	[thread overview]
Message-ID: <> (raw)

Dear all,

Recently, we made a few improvements on effectively utilizing Pause
Loop Exiting (PLE) support for higher throughput on virtualized
systems. Basically, it solves two problems: 1) how to adjust
PLE_Window; 2) how to select virtual CPUs to schedule on VM_EXITs
caused by PLE. Our tests with standard benchmarks show that the
approach can improve performance by up to 49%. The approach shows
promising performance and is easy to implement. We think that it would
be wonderful if Linux/KVM and XEN can consider the approach.

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.

[1] APPLES paper:
[2] APPLES patch:
[3] APPLES patch README:

Best Regards,
Sysmen Research Group

             reply	other threads:[~2018-05-12  8:27 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-12  8:27 Weiwei Jia [this message]
2018-05-15  8:09 ` [Xen-devel] " Wei Liu
2018-05-16  9:49 ` David Hildenbrand
2018-05-17 16:52 ` [Xen-devel] " Dario Faggioli

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