*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
