I have a problem that: Eden 100% used,Old 100% used,From Space 100% used,but not garbage collection triggered, no oom
jmap -heap [pid] result
Eden Space:
capacity = 859045888 (819.25MB)
used = 859045888(819.25MB)
free = 0 (0.0MB)
100.0% used
From Space:
capacity = 107347968 (102.375MB)
used = 12370032(11.796981811523438MB)
free = 16441280 (90.57801818847656MB)
0.0% used
To Space:
capacity = 107347968 (102.375MB)
used = 0 (0.0MB)
free = 107347968 (102.375MB)
0.0% used
PS Old generation:
capacity = 1073741824 (1024.0MB)
used = 1073741816 (1023.0832290649414MB)
free = 8 (7.62399453125E-6MB)
99.99999925494154% used
Perm Generation:
capacity = 268435456 (256.0MB)
used = 79784056 (76.08800506591797MB)
free = 188651400 (179.91199493408203MB)
29.721876978874207% used
jstat -gcutil [pid] 1000
S0 S1 E O P YGC YGCT FGC FGCT GCT
11.52 0.00 100.00 100.00 30.28 22 5.87 3 6.136 11.723
11.52 0.00 100.00 100.00 30.28 22 5.87 3 6.136 11.723
11.52 0.00 100.00 100.00 30.28 22 5.87 3 6.136 11.723
11.52 0.00 100.00 100.00 30.28 22 5.87 3 6.136 11.723
11.52 0.00 100.00 100.00 30.28 22 5.87 3 6.136 11.723
11.52 0.00 100.00 100.00 30.28 22 5.87 3 6.136 11.723
My vm args is
-Xmx2g -Xms2g -Xmn1g -XX:SurvivorRatio=8 -XX:PermSize=256m -XX:MaxPermSize=256m -XX:+HeapDumpOnOutOfMemoryError -XX:ReservedCodeCacheSize=128m -XX:InitialCodeCacheSize=128m -XX:+DisableExplicitGC -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC -XX:+PrintTenuringDistribution -XX:+UseConcMarkSweepGC -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:CMSInitiatingOccupancyFraction=80
How to solve it ?
-Xloggc:/path/to/file
and adds the content. Have you tried to attach visual vm for example? – ssedano