Re: KVM slow LAMP guest

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On 8/24/15 3:18 AM, Hansa wrote:
On 16-7-2015 13:27, Paolo Bonzini wrote:
On 15/07/2015 22:02, "C. Bröcker" wrote:
What OS is this? Is it RHEL/CentOS? If so, halt_poll_ns will be in 6.7
which will be out in a few days/weeks.

Paolo
OK. As said CentOS 6.6.
But where do I put this parameter?
You can add "kvm.halt_poll_ns=500000" to the kernel command line.  If
you have the parameter, you have the
/sys/module/kvm/parameters/halt_poll_ns file.
Hi,

I upgraded to the CentOS 6.7 release which came out last month and as promised the halt_poll_ns parameter was available. Last week I tested the availability status every 5 minutes on my Wordpress VM's with the halt_poll_ns kernel param set on DOM0. I'm pleased to announce that it solves the problem!

How much seconds to load your Wordpress site this time?

Regards,
Wanpeng Li


My guess is that a lot people out there have the same problem but do not know the solution. Why not put it in the kernel by default?

Thanks a lot for all the help!
- Hansa

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