olemus
mitmelõimeline koristi, JVM vaikevahend
= the default multithread garbage collector used by the JVM

ülevaateid
https://medium.com/@agayevrauf/exploring-the-different-kinds-of-garbage-collectors-in-java-7e1f10017c6a

https://medium.com/@RamLakshmanan/java-parallel-gc-tuning-e2d6e864504b

https://www.linkedin.com/pulse/demystifying-java-garbage-collections-naresh-kumar-i5hcc