How to read a verbose:GC output?

Question

70.222: [GC [PSYoungGen: 131072K->15437K(152896K)] 131072K->15509K(502464K), 0.0228420 secs] [Times: user=0.09 sys=0.01, real=0.02 secs]

Answer 1

In Addition to other answer , I am explaining Times section of log

[Times: user=0.09 sys=0.01, real=0.02 secs]

The “Times” section of the detailed log contains information about the CPU time used by the GC, separated into user space (“user”) and kernel space (“sys”) of the operating system.Also, it shows the real time (“real”) that passed while the GC was running.

In your case the CPU time (0.09 sec) is considerably higher than the real time passed (0.02 Sec), we can conclude that the GC was run using multiple threads.

Detailed Example