Hi,All
The oapserver starts up less than 10 minutes, and the oom will occur. The
memory object cannot be recycled。
Our generation environment is：
os：center os 7
jvm：jdk1.8
store：es6
Jvm config:
-Xmx10000M -Xms10000M -XX:MaxMetaspaceSize=512M -XX:MetaspaceSize=512M
-XX:+UseG1GC -XX:MaxGCPauseMillis=200
[admin@b01_skywalking_service_pro_v_hk bin]$ jmap -histo:live 8955|more
num #instances #bytes class name
----------------------------------------------
1: 51829445 5950648600 [C
2: 51455355 2881499880 org.apache.skywalking.apm.network.register.v2.Endpoint
3: 51829083 1243897992 java.lang.String
4: 23340 320117896 [Ljava.lang.Object;
5: 502227 24106896
org.apache.skywalking.apm.network.register.v2.EndpointMappingElement
6: 186129 8934192 com.google.common.cache.LocalCache$StrongAccessEntry
7: 20448 5932408 [B
8: 91391 5117896
org.apache.skywalking.oap.server.core.register.EndpointInventory
9: 126969 4063008 java.util.HashMap$Node
10: 187623 3001968 java.lang.Integer
11: 186129 2978064 com.google.common.cache.LocalCache$StrongValueReference
12: 15944 2134000 [Ljava.util.HashMap$Node;
13: 3120 2046720 io.netty.util.internal.shaded.org.jctools.queues.MpscArrayQueue
14: 59041 1416984
org.apache.skywalking.oap.server.core.analysis.metrics.IntKeyLongValue
15: 10722 1189296 java.lang.Class
16: 184 990592 [Lio.netty.buffer.PoolSubpage;
17: 23800 952000 io.netty.buffer.UnpooledSlicedByteBuf
18: 26937 861984 java.util.concurrent.ConcurrentHashMap$Node
19: 9296 818048 io.netty.buffer.PooledUnsafeDirectByteBuf
20: 7719 744344 [I
21: 13564 651072
org.apache.skywalking.oap.server.core.analysis.metrics.IntKeyLongValueHashMap
22: 23800 571200 io.grpc.netty.NettyReadableBuffer
23: 6799 435136 java.nio.DirectByteBuffer
24: 15649 375576 javassist.bytecode.Utf8Info
25: 15544 373056 java.util.ArrayList
[admin@b01_skywalking_service_pro_v_hk bin]$ jstat -gcutil 8955 2000
S0 S1 E O M CCS YGC YGCT FGC FGCT GCT
0.00 0.00 0.00 100.00 97.16 93.64 86 9.428 4 19.310 28.739
0.00 0.00 0.00 100.00 97.16 93.64 86 9.428 4 19.310 28.739
0.00 0.00 0.00 99.98 96.97 93.35 86 9.428 4 35.545 44.974
0.00 0.00 0.00 99.98 96.97 93.35 86 9.428 4 35.545 44.974
0.00 100.00 84.62 99.97 96.97 93.35 88 9.784 4 35.545 45.329
0.00 0.00 0.00 99.97 96.98 93.35 91 11.077 5 35.545 46.622
0.00 100.00 94.44 99.98 96.98 93.35 93 11.087 5 52.030 63.116
0.00 0.00 0.00 100.00 96.83 93.64 94 12.600 6 52.030 64.629
0.00 0.00 0.00 99.97 96.83 93.64 94 12.600 6 68.554 81.154
0.00 0.00 0.00 99.97 96.83 93.64 98 13.199 7 68.554 81.753
0.00 0.00 0.00 99.97 96.83 93.64 98 13.199 7 68.554 81.753
0.00 0.00 0.00 99.97 96.83 93.64 98 13.199 7 68.554 81.753
