Re: [kvm-unit-tests PATCH] arm: Remove MAX_SMP probe loop

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Alexandru Elisei <alexandru.elisei@xxxxxxx> writes:

Though I'm not sure how you managed to get MAX_SMP to go down to 6 cores on
a 12 core machine. MAX_SMP is initialized to $(getconf _NPROCESSORS_ONLN),
so the body of the loop should never execute. I also tried it on a 6 core
machine, and MAX_SMP was 6, not 3.

Am I missing something?

To be clear, 12 cores was a simplified example I did not directly
verify. What happened to me was 152 cores being cut down to 4. I was
confused why one machine was running a test with 4 cores when my other
machines were running with 8 and traced it to that loop. In effect the
loop was doing MAX_SMP=floor(MAX_SMP / 2) until MAX_SMP <= 8. I printed
the iterations and MAX_SMP followed the sequence 152->76->38->19->9->4.



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