ilovetolearn :
I am trying to understand what does this summary means.
"eden space 116544K, 100% used" -> Does this mean that the eden space is 100% used throughout(average) the execution of the program, or the eden space is 100% when the program exit/complete execution.
Heap
PSYoungGen total 233024K, used 116544K [0x00000000eaab0000, 0x0000000100000000, 0x0000000100000000)
eden space 116544K, 100% used [0x00000000eaab0000,0x00000000f1c80000,0x00000000f1c80000)
from space 116480K, 0% used [0x00000000f1c80000,0x00000000f1c80000,0x00000000f8e40000)
to space 116480K, 0% used [0x00000000f8e40000,0x00000000f8e40000,0x0000000100000000)
PSOldGen total 699072K, used 699071K [0x00000000c0000000, 0x00000000eaab0000, 0x00000000eaab0000)
object space 699072K, 99% used [0x00000000c0000000,0x00000000eaaafff0,0x00000000eaab0000)
PSPermGen total 21248K, used 2409K [0x00000000bae00000, 0x00000000bc2c0000, 0x00000000c0000000)
object space 21248K, 11% used [0x00000000bae00000,0x00000000bb05a740,0x00000000bc2c0000)
Eugene :
It is 100% at the precise time this was logged, not on average, no. It might change to whatever percentage at the very next minor collection, and if you have further logs, you might be able to see that.