Concurrent thread-stack processing in the Z Garbage Collector

 /  EN /

The Z Garbage Collector (ZGC) goal was to not exceed 10 ms pause times. Once Oracle got there, they wanted to be more ambitious and make pauses sub-millisecond. To do that, you can no longer scan thread stacks inside of GC pauses. This talk is about "JEP 376: ZGC: Concurrent thread-stack processing", where we moved this processing out to concurrent phases instead, to achieve the low latency GC dream.


Erik Österlund

An OpenJDK GC developer at Oracle, working primarily on ZGC.