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.


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