"I certainly don't want to convert anyone who already has their own religion..."

[said metaphorically, though I wish this was true in the literal sense more often]

"If you have a synchronization object, say a semaphore, and two threads waiting on the semaphore, and you then release two semaphore tokens with a single call to ReleaseSempahore, you would expect that each of the waiting threads would be woken, each obtaining one token. And in fact, that's what happens - most of the time..."

Perf hack -> perf hack -> regression fix -> perf hack -> regression fix -> perf hack -> regression fix -> regression fix -> perf hack -> regression fix -> regression fix -> crash fix -> crash fix -> regression fix -> restored from source depot.

...