Is it possible to show how many CPU are there in self-host worker?

[evan361425]

Component(s)

testbed

Describe the issue you're reporting

In benchmark, we can see CPU usage in percentage, but don't know how many CPU are there in the host.

I've notice we run load-test in self-host worker, is it possible to show the count of CPU in document?

[github-actions]

Pinging code owners:

• testbed: @open-telemetry/collector-approvers

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[Frapschen]

relate open-telemetry/community#2281 (comment)