The talk has a lot of interesting technical details, but the bottom line for java developers or jvm sys admins is that the new GC trades off throughput for reduced maximum pause times (current goal is 10ms max pause time, longer term goal is less than 1 ms).<p>The upshot of that is that you <i>probably</i> don't want to swap to this unless you use a relatively large heap (at least 32 GB, maybe more), because below that level the STW latency of the other GC options aren't <i>generally speaking</i> bad enough to be worth the trade-off.<p>Also if latency is a big concern for you and you've got dollars to spend consider Azul zing as well. (That part isn’t from the talk.)