Re: Performance of Xen VCPU Scheduling

[Marcus Granado <marcus.granado@citrix.com>]

On 10/07/13 14:23, Dario Faggioli wrote:
> On mer, 2013-07-10 at 14:00 +0100, Marcus Granado wrote:
>>
>> While trying to understand why this increased performance is not present
>> in the default non-pinned state and if it would be possible to obtain
>> this extra performance in the default non-pinned dom0 configuration,
>> Matthew Portas and I evaluated lots of Xen 4.2 parameters and patches:
>>
>
> Just one point. This by any means make all this study/effort less
> valuable (quite the contrary, actually), but, with George, we started to
> discuss about bringing credit2 into a better shape and, at some point,
> switch to it by default. It's unclear whether this could be done for
> 4.4, but still... So, do you have any numbers about it already?

Yes, I believe we have a couple of results for credit2, I'll put them on 
the page.

> How hard
> will it be to, at some point, perform the same measurements and analysis
> with it?
>

Easy enough, all the measurements used automated tests to improve 
reproducibility. We would need a url with binaries or rpms as input, and 
the output is a set of graphs for analysis.

cheers,
Marcus