-XX:+UseG1GC
summary
G1 garbage collector (becoming the default in JDK 9) and how it changes JVM heap structure and handling of large and small collections. The talk explains G1’s algorithm and characteristics, discusses practical use cases and known early-stage problems, and gives tuning tricks and deployment/optimization techniques for reliable adoption.
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chapters (11)
- 0:00G1GC introduction
- 3:32G1GC replacing CMS
- 10:12Generational principle
- 17:14G1GC compaction
- 23:19Remember Set and CSet
- 27:20G1GC collection types
- 33:24Basic G1GC tuning
- 37:39Humongous objects
- 41:34GC log analysis
- 43:45G1GC silver bullet?
- 45:53Summary & Q&A
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