RFR (M): 8212657: Implementation of JDK-8204089 Timely Reduce Unused Committed Memory

Sunny Chan, CLSA sunny.chan at clsa.com
Wed Nov 14 06:48:42 UTC 2018


In general if someone set -Xmx and -Xms to the same value we generally won't want the GC to release memory back to the operating system as we actually need this for some reason (e.g. low latency). Can we disable the periodic GC if someone set -Xmx and -Xms to the same value? Also if someone use "-XX:+AlwaysPreTouch" in general they would be sensitive to the os page allocation latency, and we should consider whether should be candidate for this memory utilization optimization when the option is used.

Sunny Chan
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