jmap -heap 27657

Attaching to process ID 27657, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 24.51-b03 using thread-local object allocation.
Parallel GC with 4 thread(s) Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 536870912 (512.0MB)
NewSize = 1048576 (1.0MB)
MaxNewSize = 4294901760 (4095.9375MB)
OldSize = 4194304 (4.0MB)
NewRatio = 2
SurvivorRatio = 8
PermSize = 16777216 (16.0MB)
MaxPermSize = 67108864 (64.0MB)
G1HeapRegionSize = 0 (0.0MB) Heap Usage:
PS Young Generation
Eden Space:
capacity = 11010048 (10.5MB)
used = 9314392 (8.882896423339844MB)
free = 1695656 (1.6171035766601562MB)
84.59901355561756% used
From Space:
capacity = 262144 (0.25MB)
used = 0 (0.0MB)
free = 262144 (0.25MB)
0.0% used
To Space:
capacity = 262144 (0.25MB)
used = 0 (0.0MB)
free = 262144 (0.25MB)
0.0% used
PS Old Generation
capacity = 40894464 (39.0MB)
used = 34679464 (33.072914123535156MB)
free = 6215000 (5.927085876464844MB)
84.8023439065004% used
PS Perm Generation
capacity = 17301504 (16.5MB)
used = 17055496 (16.26538848876953MB)
free = 246008 (0.23461151123046875MB)
98.57811205314867% used 9300 interned Strings occupying 768008 bytes.
04-03 11:34