On Monday, January 27, 2020 at 12:16:08 AM UTC-7, Henning Schild wrote:
>
> Ok, so we are just looking for differences between the inmate and the 
> linux as non-root cell, because the jailhouse/virtualization overhead 
> is acceptable or known. 
>
I think so, yeah.
 

> In that case a memory bound workload boils down to the mapping and the 
> tlb misses or CAT. And cpu bound could be an issue with the FPU. If your 
> binary uses FPU instructions but is able to fall back to soft-fpu, you 
> should check which path it takes in the inmate. 
>
Let's see: CAT isn't supported by my chip, so that won't help, 
unfortunately. But the Linux workload is mostly idle, so I'm not sure how 
much that would have helped anyways.

My inmates don't use FPU instructions, and it's not even set up, so I don't 
think that will cause a problem.

I will investigate TLB misses and page mappings and see what I can find.

Thanks,
Michael 

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