On Monday, January 20, 2020 at 4:32:45 AM UTC-7, Ralf Ramsauer wrote:
>
> Hi Michael, 
>
> More exits, more overall penalty. Depends on your test case. You can use 
> jailhouse cell stats to account for exits. 
>

Great idea. I started recording deltas in vmexit totals to better 
understand what is going on. Thanks.

I experienced a similar performance drop a while ago. In my case, it was 
> misconfigured CAT -- too little cache for the non-root cell hit the 
> performance. 
>

Is CAT Intel's Cache Allocation Technology? I was unaware that Jailhouse 
had support for this yet. My configs don't specify anything regarding the 
cache, so what happens by default? Do you have more information you can 
refer me to?

I'm going to describe my setup in more detail in my next post.

-Michael

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