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javagarbage-collectionjvm

Java GC log analysis

I am new to gc log.

What is the meaning of the following gc log. Does it imply some useful information?

16960.890: [GC [PSYoungGen: 111960K->36400K(523584K)] 845053K->770190K(1286720K), 0.0270419 secs] [Times: user=0.13 sys=0.00, real=0.03 secs] 
16960.917: [Full GC (System) [PSYoungGen: 36400K->0K(523584K)] [PSOldGen: 733789K->714479K(763136K)] 770190K->714479K(1286720K) [PSPermGen: 34154K->34154K(38208K)], 1.0982179 secs] [Times: user=1.09 sys=0.00, real=1.09 secs]

what does PSYoundGen mean? what does the Full GC line mean? i search it in google ,but does not understand it clearly. thanks for the reply!

Solution

  • PSYoungGen refers to the garbage collector in use for the minor collection. PS stands for Parallel Scavenge.

    Ref: Java Garbage Collection Log messages