JDK17使用ZGC算法有时系统CPU 100% #216
Description
我们的业务几天前从JDK8升级到dragonwell17，使用的ZGC垃圾回收算法，程序运行几天后发现有时候CPU会到100%，对比gc log这个时候是gc的Concurrent Mark阶段，CPU高的时候很多线程的CPU都高
JVM OPTION是
-Xms30G -Xmx30G -server -Xss256K -XX:-OmitStackTraceInFastThrow -XX:MaxDirectMemorySize=256G -Dio.netty.maxDirectMemory=10474836480 -XX:+UseZGC -XX:+PrintGCDetails --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED --add-opens=java.base/java.nio=ALL-UNNAMED --add-opens=java.base/jdk.internal.ref=ALL-UNNAMED --add-opens=java.base/jdk.internal.misc=ALL-UNNAMED -Xlog:safepoint=info, classhisto*=trace, age*=info, gc*=info:file=/export/Logs/jmq4-server/gc-%t.log:time,level,tid,tags:filecount=5,filesize=2000M -Xlog:async -XX:+UseCountedLoopSafepoints -XX:ZAllocationSpikeTolerance=5 -XX:ZCollectionInterval=60 -XX:+UnlockDiagnosticVMOptions -XX:+LogVMOutput -XX:-ZProactive -XX:MaxMetaspaceSize=10G -DasmEnable=false
CPU高的时候线程信息
` PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
399828 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 40:32.84 ZWorker#3
399829 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 39:47.48 ZWorker#4
399830 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 41:47.69 ZWorker#5
399833 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 40:31.78 ZWorker#8
400007 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 0:45.39 joyqueue-t+
400067 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 0:48.79 joyqueue-b+
400099 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 0:35.71 Monitor-Ca+
400159 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 0:21.21 ConsumeArc+
400281 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 4:52.77 joyqueue-f+
400303 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 0:59.48 joyqueue-f+
400361 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 4:32.60 joyqueue-f+
400390 admin 20 0 1565.1g 161.6g 76.1g R 99.9 85.8 4:39.99 joyqueue-f+
400119 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:14.84 Election-T+
400142 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:26.49 mqtt-consu+
400146 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:31.20 mqtt-consu+
400148 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:47.44 mqtt-consu+
400156 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 290:15.61 joyqueue-m+
400182 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:38.51 joyqueue-f+
400188 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:52.23 joyqueue-f+
400229 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:52.47 joyqueue-f+
400238 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:34.18 joyqueue-f+
400240 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:47.11 joyqueue-f+
400264 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:22.33 joyqueue-f+
400278 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:21.96 joyqueue-f+
400282 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:51.20 joyqueue-f+
400283 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:30.29 joyqueue-f+
400342 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:32.48 joyqueue-f+
400347 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:37.77 joyqueue-f+
400373 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:33.34 joyqueue-f+
400376 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:43.81 joyqueue-f+
400400 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:34.78 joyqueue-f+
400421 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:37.59 joyqueue-f+
400435 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:36.10 joyqueue-f+
400446 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 1:22.00 joyqueue-f+
400459 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:36.83 joyqueue-f+
400477 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:31.28 joyqueue-f+
400481 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:45.27 joyqueue-f+
400486 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:44.17 joyqueue-f+
400546 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:21.97 joyqueue-f+
400552 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:22.42 joyqueue-f+
400553 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:24.62 joyqueue-f+
400555 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:29.20 joyqueue-f+
400571 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:30.40 joyqueue-f+
400606 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:18.70 joyqueue-f+
400630 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:25.46 joyqueue-f+
400635 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:31.09 joyqueue-f+
400637 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:38.34 joyqueue-f+
400654 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:29.18 joyqueue-f+
400684 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 4:19.23 joyqueue-f+
400759 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:36.33 joyqueue-b+
400800 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:01.97 joyqueue-f+
400827 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 1:49.40 joyqueue-f+
401241 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 451:05.99 WriteThrea+
401271 admin 20 0 1565.1g 161.6g 76.1g R 94.4 85.8 0:34.28 joyqueue-d+
400437 admin 20 0 1565.1g 161.6g 76.1g R 88.9 85.8 4:22.83 joyqueue-f+
400653 admin 20 0 1565.1g 161.6g 76.1g R 88.9 85.8 4:41.85 joyqueue-f+
400013 admin 20 0 1565.1g 161.6g 76.1g R 83.3 85.8 0:57.65 joyqueue-c+
400454 admin 20 0 1565.1g 161.6g 76.1g R 83.3 85.8 4:51.35 joyqueue-f+
400005 admin 20 0 1565.1g 161.6g 76.1g R 72.2 85.8 0:47.30 UMP-PROFIL+
400305 admin 20 0 1565.1g 161.6g 76.1g R 72.2 85.8 4:40.22 joyqueue-f+
400569 admin 20 0 1565.1g 161.6g 76.1g R 72.2 85.8 4:25.63 joyqueue-f+
400574 admin 20 0 1565.1g 161.6g 76.1g R 72.2 85.8 4:22.68 joyqueue-f+
400632 admin 20 0 1565.1g 161.6g 76.1g R 72.2 85.8 4:15.84 joyqueue-f+
400910 admin 20 0 1565.1g 161.6g 76.1g R 66.7 85.8 2:16.74 joyqueue-f+
400565 admin 20 0 1565.1g 161.6g 76.1g R 55.6 85.8 4:12.62 joyqueue-f+
400279 admin 20 0 1565.1g 161.6g 76.1g R 50.0 85.8 4:26.16 joyqueue-f+
400356 admin 20 0 1565.1g 161.6g 76.1g R 44.4 85.8 4:46.35 joyqueue-f+
399823 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 0:00.00 java
399824 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 0:12.82 java
399825 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 38:32.94 ZWorker#0
399826 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 39:49.78 ZWorker#1
399827 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 39:11.51 ZWorker#2
399831 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 40:20.75 ZWorker#6
399832 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 39:34.93 ZWorker#7
399834 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 39:57.77 ZWorker#9
399835 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 39:21.11 ZWorker#10
399836 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 39:04.65 ZWorker#11
399837 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 38:34.60 ZWorker#12
399838 admin 20 0 1565.1g 161.6g 76.1g S 0.0 85.8 40:48.50 ZWorker#13`