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Code Block
sysctl -w vm.max_map_count=131072

and restart WCS.

Known issues

1. CPU load average is higher when ZGC is used, especially in JDK 15

Symptoms: CPU load average measured at system level (using htop for example) grows after update from JDK 12 or 14 to 15 if ZGC is used

Solution: use ZGC in JDK 12 or 14 only fro high loaded servers if GC pauses minimizing is required