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From Lin Chun <franks1...@gmail.com>
Subject Tomcat is stopped any errors
Date Thu, 30 Jul 2009 15:13:50 GMT
*Hi all**
*
*I got a problem. Tomcat is stopped without any errors, I think it might be
the crash of JVM , when Tomcat is running  I got the infos of heap *
*
*
*
*
*Heap Configuration:
   MinHeapFreeRatio = 40
   MaxHeapFreeRatio = 70
   MaxHeapSize      = 536870912 (512.0MB)
   NewSize          = 655360 (0.625MB)
   MaxNewSize       = 4294901760 (4095.9375MB)
   OldSize          = 1441792 (1.375MB)
   NewRatio         = 8
   SurvivorRatio    = 8
   PermSize         = 16777216 (16.0MB)
   MaxPermSize      = 67108864 (64.0MB)

Heap Usage:
New Generation (Eden + 1 Survivor Space):
   capacity = 13565952 (12.9375MB)
   used     = 8915576 (8.502555847167969MB)
   free     = 4650376 (4.434944152832031MB)
   65.72023843221618% used
Eden Space:
   capacity = 12124160 (11.5625MB)
   used     = 8380088 (7.991874694824219MB)
   free     = 3744072 (3.5706253051757812MB)
   69.1189162795608% used
>From Space:
   capacity = 1441792 (1.375MB)
   used     = 535488 (0.51068115234375MB)
   free     = 906304 (0.86431884765625MB)
   37.14044744318182% used
To Space:
   capacity = 1441792 (1.375MB)
   used     = 0 (0.0MB)
   free     = 1441792 (1.375MB)
   0.0% used
tenured generation:
   capacity = 119341056 (113.8125MB)
   used     = 40252056 (38.387351989746094MB)
   free     = 79089000 (75.4251480102539MB)
   33.728590435801074% used
Perm Generation:
   capacity = 48496640 (46.25MB)
   used     = 48485864 (46.239723205566406MB)
   free     = 10776 (0.01027679443359375MB)
   99.97777990392737% used

*
*don't know much about the parameters of JVM, but the 99.9% used of perm
seems not normal.*
*
*
*Further more,  is there any way to produce a JVM thread dump after Tomcat
stoped(crashed)*
*
*
*Thanks *
*
*
*Re,*

-- 
-------------------------
Lin Chun

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