Aikar d4d21be955 Optimize performance of object pool ...

synchronized arraydeque ends up still being way faster.
Kinda shocked how much that strategy was using, it wasn't really
that complicated... but oh well, this is even simpler and not
seeing blocked threads show up at all in profiling because
the lock is held for such a short amount of time.

also because most uses are on either server thread pool or chunk load pool.

Also optimize the pooling of nibbles to not register Cleaner's
for Light Engine directed usages, as we know we are properly
controlling clean up there, so we don't need to rely on GC.

This will return them to the pool manually, saving a lot of Cleaners.

Closes #3417

2020-05-20 21:45:43 -04:00

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