Thanks for the writeup Sean. I've been interested in pony since I read about here on HN a while back.

I have a question on this quote

> The standard JVM garbage collection strategy is “stop the world.” That is, when the JVM needs to reclaim unused memory, it needs to pause all other processing so it can safely garbage collect. These pauses are sometimes measured in seconds. That is going to destroy your tail latencies.

Thats why applications rarely use the default serial collector.

Does your comparison still hold against the CMS and G1 collectors, which do a much a better job at eliminating "stop the world pauses"?