LOCK_PROFILING patch

Kip Macy kip.macy at gmail.com
Fri Feb 23 21:08:21 UTC 2007


Tracking acquisition wait time on x86 is very expensive. The following
patch only looks at the time if the lock is contested so that we only
pay the price for timekeeping if we are going to actually have to wait
to acquire the lock.

http://www.fsmware.com/freebsd/lock_prof.diff


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