Re: [PATCH RFC 1/2] kvm: Handle undercommitted guest case in PLE handler

[Nikunj A Dadhania]

On Wed, 10 Oct 2012 09:24:55 -0500, Andrew Theurer <habanero@xxxxxxxxxxxxxxxxxx> wrote:
> 
> Below is again 8 x 20-way VMs, but this time I tried out Nikunj's gang
> scheduling patches.  While I am not recommending gang scheduling, I
> think it's a good data point.  The performance is 3.88x the PLE result.
> 
> https://docs.google.com/open?id=0B6tfUNlZ-14wWXdscWcwNTVEY3M

That looks pretty good and serves the purpose. And the result says it all.

> Note that the task switching intervals of 4ms are quite obvious again,
> and this time all vCPUs from same VM run at the same time.  It
> represents the best possible outcome.
> 
> 
> Anyway, I thought the bitmaps might help better visualize what's going
> on.
> 
> -Andrew
> 

Regards
Nikunj

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