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41e6a154ec
InnoDB RNG maintains global state, causing otherwise unnecessary bus
traffic. Even worse, this is cross-mutex traffic. That is, different
mutexes suffer from contention.
Fixed delay of 4 was verified to give best throughput by OLTP update
index and read-write benchmarks on Intel Broadwell (2/20/40) and
ARM (1/46/46).
This is a backport of
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sync0arr.cc | ||
sync0debug.cc | ||
sync0rw.cc | ||
sync0sync.cc |