On 02/03/2014 06:40 AM, Peter Zijlstra wrote:
On Fri, Jan 31, 2014 at 02:24:33PM -0500, Waiman Long wrote:
Light contention is the only case where the qspinlock may not perform as
good as the ticket spinlock. I know this is the most common case. However, I
would argue that the slowdown, if any, will not be really noticeable. This
is what I will try to find out.
Please also explain why things are slower/faster. Thomas tried to get
you to do so a few months back, but you kept deflecting.
It is not easy to have a test case to test light contention. I am trying
to create custom test case to get that data.
-Longman
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