* Marcelo Tosatti <[EMAIL PROTECTED]> wrote:
> lat_ctx numbers (output is "nr-procs overhead-in-us"):
>
> cr3-cache:
> "size=0k ovr=1.30
> 2 6.63
> "size=0k ovr=1.31
> 4 7.43
> "size=0k ovr=1.32
> 8 11.02
when i did the testing then i was able to get zero VM exits in the
lat_ctx hotpath and get the same performance as on native. The above
numbers you got suggest that this is not the case. (your lat_ctx numbers
on native are probably around 1 usec, right?) If that is the case, could
you check via profile=kvm (or whatever other method you use to profile
KVM) where the VM exits come from?
Ingo
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