ZGC
ZGC is a scalable and low-latency GC, performing all expensive work concurrently and without stopping the execution of application threads. It's designed to accommodate heap sizes between 8MB and 16TB.
- Enabled with
-XX:+UseZGC
. - The number of threads used for concurrent work is set with
-XX:ConcGCThreads
, and defaults to-XX:ParallelGCThreads
/ 4. -XX:+ZUncommit
toggles uncommitting unused memory (defaults to +).-XX:ZUncommitDelay
sets the number of seconds before unused memory is considered eligible for uncommit.
References
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