On 08/04/2014 05:20 PM, Jason Low wrote:
On Sun, 2014-08-03 at 22:36 -0400, Waiman Long wrote:
On a highly contended rwsem, spinlock contention due to the slow
rwsem_wake() call can be a significant portion of the total CPU cycles
used. With writer lock stealing and writer optimistic spinning, t
On Sun, 2014-08-03 at 22:36 -0400, Waiman Long wrote:
> On a highly contended rwsem, spinlock contention due to the slow
> rwsem_wake() call can be a significant portion of the total CPU cycles
> used. With writer lock stealing and writer optimistic spinning, there
> is also a pretty good chance th
On a highly contended rwsem, spinlock contention due to the slow
rwsem_wake() call can be a significant portion of the total CPU cycles
used. With writer lock stealing and writer optimistic spinning, there
is also a pretty good chance that the lock may have been stolen
before the waker wakes up the
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