Re: [Xen-users] Not good performance on Xen

[LOMBARD Maxime <berillions@xxxxxxxxx>]

Thanks Dario,

I will try your suggestion after work. I hope it will works, had error message 
with the suggestion from Kun.

And about my test and result, what do you think ?

Maxime

Envoyé de mon iPhone

> Le 27 oct. 2017 à 09:30, Dario Faggioli <raistlin@xxxxxxxx> a écrit :
> 
>> On Fri, 2017-10-27 at 10:48 +0800, Kun Cheng wrote:
>> Could you try pin dom0's vcpus after entering Dom0 with cmds (root
>> privilege maybe required):
>> 
>> xl vcpu-pin 0 all 0-5 0-5
>> 
>> (change the number and range accordingly if you Dom0's VCPU
>> configuration is other than 6)
>> 
>> It sets Dom0's all(i.e. 6) VCPUs to core 0-5 with both hard and soft
>> CPU affinity (which means those VCPUs won't be migrated to other
>> cores
>> during load balancing).
>> 
> If you don't want dom0's vCPUs to be run anywhere outside of pCPUs 0-5, 
> setting hard affinity is enough, like this:
> 
> # xl vcpu-pin 0 all 0-5
> 
> or:
> 
> # xl vcpu-pin 0 all 0-5 all
> 
> Setting both hard and soft affinity to the same set of pCPUs is
> useless, and, if anything, only causes more overhead, so just don't do
> that.
> 
> Regards,
> Dario
> -- 
> <<This happens because I choose it to happen!>> (Raistlin Majere)
> -----------------------------------------------------------------
> Dario Faggioli, Ph.D, http://about.me/dario.faggioli

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