JVM's Parallel scavenge collector

Cenozoic collectors, replication algorithms, parallel collection, throughput-oriented requirements (throughput priority collector).

Throughput = user code run time/(user code run time + garbage collection Time)

-xx:maxgcpausemillis: Controls the maximum garbage collection pause time, which is greater than 0 milliseconds.

-xx:gctimeratio: Throughput size, integers from 0 to 100, garbage collection time as a proportion of total time, calculated 1/(1+N) GC time consumption ratio.

-xx:useadaptivesizepolicy: After opening, you do not need to set the Cenozoic size (-xmn), Edian,survivor scale and (-xx:survivorratio) Age of promotion (-XX: Pretenuresizethreshold), the virtual machine according to the system health, adjust the pause time, throughput, GC Adaptive adjustment Strategy, the difference between parnew.

JVM's Parallel scavenge collector