This is basically a re-request to fix MDEV-14374 as it was described. On target architectures where nothing special is available (not IA-32, AMD64, POWER), the macro UT_RELAX_CPU() would perform a dummy compare-and-swap operation.
According to krunalbauskar, this extra operation is visible in some benchmarks.
| Transition |
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6m 3s
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1
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3d 17h 12m
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Bug
Major
MDEV-23635 Add notional delay (using existing ut_delay) while spinning for registering reader in rw-locks
