DataNode jmap 输出
Attaching to process ID 2785, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 24.80-b11
using parallel threads in the new generation.
using thread-local object allocation.
Concurrent Mark-Sweep GC
Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 2147483648 (2048.0MB)
NewSize = 715784192 (682.625MB)
MaxNewSize = 715784192 (682.625MB)
OldSize = 1431633920 (1365.3125MB)
NewRatio = 2
SurvivorRatio = 8
PermSize = 21757952 (20.75MB)
MaxPermSize = 85983232 (82.0MB)
G1HeapRegionSize = 0 (0.0MB)
Heap Usage:
New Generation (Eden + 1 Survivor Space):
capacity = 644218880 (614.375MB)
used = 23833272 (22.72917938232422MB)
free = 620385608 (591.6458206176758MB)
3.699561242290819% used
Eden Space:
capacity = 572653568 (546.125MB)
used = 13237336 (12.624107360839844MB)
free = 559416232 (533.5008926391602MB)
2.31157836774362% used
From Space:
capacity = 71565312 (68.25MB)
used = 10595936 (10.105072021484375MB)
free = 60969376 (58.144927978515625MB)
14.805966331845237% used
To Space:
capacity = 71565312 (68.25MB)
used = 0 (0.0MB)
free = 71565312 (68.25MB)
0.0% used
concurrent mark-sweep generation:
capacity = 1431699456 (1365.375MB)
used = 972018776 (926.9893417358398MB)
free = 459680680 (438.38565826416016MB)
67.89265525850699% used
Perm Generation:
capacity = 53235712 (50.76953125MB)
used = 31877760 (30.4010009765625MB)
free = 21357952 (20.3685302734375MB)
59.88040509348311% used
11543 interned Strings occupying 1025000 bytes.