Josh Berkus wrote:
What did you test exactly and could you explain a bit about the context switch storm?Gaetano,
I knew there was an evaluation on the futex vs spinlock,
and Josh Berkus on IRC told me that there was only a 20%
performance increase, is this increase to throw away ?
Before we get totally off track here ....
I evaluated futexes strictly as an attempt to solve the context switch storm bug. I did NOT test whether they improved performance overall.
Did you use the futex interface directly or pthread_rwlock_rdlock?
-- Manfred
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