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dits_and_dots
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Contributor

Performance Counter Passthrough Not Working

I'm running VMWare Workstation 15 and attempting to use performance counters inside the VM. While some counters come through, some do not. Specifically:

sudo perf stat -e r5101c4 -e r2005101c4 true   Performance counter stats for 'true':                   0      r5101c4             78,279      r2005101c4         0.000584271 seconds time elapsed

Unfortunately, I need access to the r5101c4 counter. I have booted directly into Ubuntu on my machine and can verify that it can access it with the same base ubuntu bionic install. At this point, best I can tell is that there's something using that counter on my Windows 10 host machine.

How do I go about determining what is using that counter? Is there any way to ask Windows directly to point me at the offending process?

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