Lets learn to talk to GC logs
summary
Unified JVM logging replaces old GC flags so GC logging uses -Xlog:gc with tag sets, levels and decorators; examples show output columns (uptime, level, tags) and file rotation with -Xlog:file. Migration maps common flags (three popular flags kept) but 43 flags removed from the repo. G1 specifics require GC+phases=debug to show phase details, and heap/heap-region info comes from GC+heap=debug or GC+region=trace. Configuration is changeable at runtime via jcmd/VM.log.
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chapters (10)
- 0:00Start
- 0:28New Gc Logging in Java 9
- 0:46Unified Jvm Logging Framework
- 1:27Unified Jvm Logging Framework New in Java 9
- 2:14Unified Jvn Logging Framework
- 6:47Unified Dc Logging
- 7:19Old Gc Logging Options
- 8:11Example Output
- 9:10What Happens to the Old Gc Logging Flags
- 12:59Gc Details
