Message 340139 - Python tracker

> Any ideas of how far I need to throttle the VM?  Is there more than just CPU that I need to limit?

I don't know how to make the race condition more likely. I'm not sure that starving the CPU helps. Maybe try the opposite: add more CPUs and reduce the number of tests run in parallel.

Did you test commit f13c5c8b9401a9dc19e95d8b420ee100ac022208?