Hi William, maybe it is a bit too much to ask, but would it be possible for you to build and run a self-compiled version of the JDK in some test environment?
Yesterday a patch to fix these kinds of problems has been pushed to the 8u repos. It will only be available with 8u122 though (as far as I know), which has a GA of January 2017. Otherwise early access builds will probably be available as soon as October this year, after 8u112 shipped. Unfortunately, really diagnosing some of the potential causes of this issue also requires a custom build too, containing some otherwise compiled-out code. That change (JDK-8152438) is known to fix similar issues that you see. It particularly helps if your object graph is relatively deep and narrow with one or more largish arrays of java.lang.Object that contain the only references to many objects. One thing that could be tried is decreasing region size to 2M or even 1M (what we typically do not recommend). This may keep these objects out of the young gen, and so they are accessed differently. This may have other negative consequences on performance though. However then scalability of the evacuation pause should be better. Thanks, Thomas _______________________________________________ hotspot-gc-use mailing list hotspot-gc-use@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use
