backport JEP 344-Abortable Mixed Collections for G1 to jdk11u

[Aleksey Shipilev]

On 3/29/19 8:02 AM, 臧琳 wrote:
>     This is CCed from hotspot-gc-dev. 
>     I am planing to port JEP344 back to JDK11u, it helps me to reduce the long pause MixedGC as discussed.
>     What is your opinion?

My immediate opinion is that the change is large, and probably too risky to backport for the GC
enabled by default:
  http://hg.openjdk.java.net/jdk/jdk/rev/495c05ee2a9a

For surviving large heaps, you can use Shenandoah or ZGC.

-Aleksey