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saagarjha
on June 18, 2023
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A single line of code made a 24-core server slower...
Pure spin locks will always win for uncontended locks.
NobodyNada
on June 18, 2023
[–]
Without any contention at all, a spinlock and a mutex are identical: a single compare-and-swap.
gpderetta
on June 18, 2023
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Technically you can use a release-store on a spinlock unlock path, but you need a CAS for a mutex.
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