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fear91
on Aug 11, 2024
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Golang Sync Mutex: Normal and Starvation Mode
It differs by CPU model.
Thorrez
on Aug 12, 2024
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So some CPU models wait 120 cycles and others wait a millisecond (millions of cycles)? That seems like a pretty drastic difference. I wonder why they would write code with such a drastic difference between CPU models.
fear91
on Aug 13, 2024
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No, Haswell's PAUSE is 9 cycles, the P-cores of Alder Lake are 160 cycles. Zen 4 is 65.
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