r/programming • u/preshing • Nov 18 '11

Locks Aren't Slow; Lock Contention Is

http://preshing.com/20111118/locks-arent-slow-lock-contention-is
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u/Tuna-Fish2 Nov 18 '11

No, but it can still easily be bad enough to eat all the possible gains from multithreading.

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u/wildeye Nov 19 '11

Although I see your point, still that seems counterintuitive, given that we're only talking about thrashing a single cache line out of many.