Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling

From	Wanpeng Li <wanpeng.li@hotmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling
Date	2015-08-30 02:30 +0200
Message-ID	<q2YFr-17l-3@gated-at.bofh.it> (permalink)
References	(1 earlier) <q2WNk-6U1-19@gated-at.bofh.it> <q2WNk-6U1-17@gated-at.bofh.it> <q2WX0-74X-9@gated-at.bofh.it> <q2Ycq-kl-11@gated-at.bofh.it> <q2YvL-Wc-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 8/30/15 8:13 AM, Peter Kieser wrote:
> On 2015-08-29 4:55 PM, Wanpeng Li wrote:
>> On 8/30/15 6:26 AM, Peter Kieser wrote:
>>> Thanks, Wanpeng. Applied this to Linux 3.18 and seeing much higher 
>>> CPU usage (200%) for qemu 2.4.0 process on a Windows 10 x64 guest. 
>>> qemu parameters:
>>
>> Thanks for the report. If Paolo's patch "kvm: add halt_poll_ns module 
>> parameter" is applied on your 3.18? Btw, do you test the linux guest? 
>
> No high CPU usage on Linux guests. 

What's the difference w/ and w/o the patchset?

> Following patch series are applied (in order):
>
> * kvm: add halt_poll_ns module parameter
> * KVM: make halt_poll_ns static
> * KVM: Dynamic Halt-Polling v4
>

I will find a windows 10 x64 guest to figure out what happens tomorrow. 
Do you test other windows guest(like win7)? Btw, could you test v3 
dynamic halt-polling(against windows 10 guest) which David gives the 
shrink/grow logic different with v4. Many thanks for your time, Peter! ;-)

Regards,
Wanepng Li

> -Peter
>
>

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Thread

[PATCH v4 0/3] KVM: Dynamic Halt-Polling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-08-27 11:50 +0200
  Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-08-30 00:30 +0200
    Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling Peter Kieser <peter@kieser.ca> - 2015-08-30 00:40 +0200
      Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-08-30 02:00 +0200
        Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling Peter Kieser <peter@kieser.ca> - 2015-08-30 02:20 +0200
          Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-08-30 02:30 +0200
      Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-08-31 09:50 +0200
        Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-08-31 09:50 +0200
  Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling David Matlack <dmatlack@google.com> - 2015-09-01 23:50 +0200
    Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-09-02 00:40 +0200
      Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling David Matlack <dmatlack@google.com> - 2015-09-02 00:40 +0200
        Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-09-02 01:00 +0200
          Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling David Matlack <dmatlack@google.com> - 2015-09-02 01:30 +0200
            Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-09-02 02:40 +0200
              Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling David Matlack <dmatlack@google.com> - 2015-09-02 04:00 +0200
                Re: [PATCH v4 0/3] KVM: Dynamic Halt-Polling Wanpeng Li <wanpeng.li@hotmail.com> - 2015-09-02 08:10 +0200

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