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What does GarbageCollectorMXBean#getCollectionTime mean in G1GC. Is it the sum of pause time(time spent by STW phase) and concurrent phase or something else?

Sairam Cherupally
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The method getCollectionTime returns a long value of the approximate accumulated collection elapsed time in milliseconds.

Java docs on the GarbageCollectorMXBean Interface

HyperProgrammer
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  • I'm looking for more detailed answer rather than Javadoc reference. Particularly how does it relate to Pause Time and concurrent phases of GC algorithm. Does that metric include both ? – Sairam Cherupally Oct 09 '21 at 10:30