Angus Gratton
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4d42b2d100
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freertos spinlock/portmux: Reduce spinlocking overhead
Ref TW7117
Microbenchmarks in unit tests:
(All numbers in cycles per benchmarked operation):
Release mode
No lock contention lock/unlock - 301 -> 167 (-45%)
Recursive no contention lock/unlock - 289 -> 148 (-49%)
Lock contention two CPUs (lock/unlock) 699 -> 400 (-43%)
Debug mode
No lock contention lock/unlock - 355 -> 203 (-43%)
Recursive no contention lock/unlock - 345 -> 188 (-46%)
Lock contention two CPUs (lock/unlock) 761 -> 483 (-36%)
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2017-09-04 19:11:51 +10:00 |
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