Add a lock contention measuring tool to the list of desirable features
without an owner. To measure the effectiveness of our locking strategy,
optimality of mutex pools, etc, we'll need a tool that tells us what
locks are the "hottest", as well as other useful statistics such as
average latency to wait on a lock, perhaps throughput on the lock, etc.
This task will require some relatively in-depth analysis of what we need
to know, not just hacking, but should prove interesting and highly
valuable.