You can also try below command that gives you detail of entire memory usage :
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$ jmap -heap <Proces ID of your JVM>
Attaching to process ID 29696, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 20.6-b01
using thread-local object allocation.
Parallel GC with 4 thread(s)
Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 1367343104 (1304.0MB)
NewSize = 1310720 (1.25MB)
MaxNewSize = 17592186044415 MB
OldSize = 5439488 (5.1875MB)
NewRatio = 2
SurvivorRatio = 8
PermSize = 21757952 (20.75MB)
MaxPermSize = 268435456 (256.0MB)
Heap Usage:
PS Young Generation
Eden Space:
capacity = 341966848 (326.125MB)
used = 298634744 (284.80028533935547MB)
free = 43332104 (41.32471466064453MB)
87.32856583805457% used
From Space:
capacity = 56885248 (54.25MB)
used = 56854136 (54.22032928466797MB)
free = 31112 (0.02967071533203125MB)
99.94530743717598% used
To Space:
capacity = 56885248 (54.25MB)
used = 0 (0.0MB)
free = 56885248 (54.25MB)
0.0% used
PS Old Generation
capacity = 910884864 (868.6875MB)
used = 71342136 (68.03716278076172MB)
free = 839542728 (800.6503372192383MB)
7.832179325794572% used
PS Perm Generation
capacity = 71303168 (68.0MB)
used = 71145280 (67.84942626953125MB)
free = 157888 (0.15057373046875MB)
99.77856804342831% used
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