Selection of JVM garbage Collector
1. Serial recovery
Generally used on a single CPU platform
Open it with-XX:+UseSerialGC
two。 Parallel recovery
Generally used on multi-CPU platforms
Open with-XX:UseParallelGC (the younger generation uses parallel collection to reduce garbage collection time)
Open the parallel collection of the old age with-XX:UseParallelOldGC
Set the number of parallel garbage collection threads with-XX:UseParallelGCThreads (can be set equal to the machine processor)
3. Concurrent recovery
Suitable for medium and large applications with high response time requirements
Open it with-XX:+UseConcMarkSweepGC
The main purpose of the concurrent collector is to reduce the pause time in the old days.
