JEP 248: Make G1 the Default Garbage Collector

Kirk Pepperdine kirk at
Tue Jun 2 08:58:56 UTC 2015

> The use case we are talking about is the “out of the box” experience.
> One question that may be worth pondering … suppose G1 happened to be the default GC today, and there was a JEP to make Parallel GC the default GC. What would your reaction to that JEP be?  I’m asking that question since I’d like to get a sense if your concerns are more about conservatism (not wanting to change behavior), stability of G1 or otherwise.

That is a fair question. If the G1 were as stable and mature as the Parallel collector is today and the Parallel collector was as stable and mature as the G1 is today, I don’t think I’d change my opinion to make a conservative decision.


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