dashboard

当前系统的实时数据面板,按 ctrl+c 退出。

当运行在Ali-tomcat时,会显示当前tomcat的实时信息,如HTTP请求的qps, rt, 错误数, 线程池信息等等。

使用参考

  1. $ dashboard
  2. ID NAME GROUP PRIORITY STATE %CPU TIME INTERRUPTED DAEMON
  3. 889 RMI TCP Connection(15)-30.10.166. RMI Runtime 9 RUNNABLE 48 0:5 false true
  4. 1077 Timer-for-arthas-dashboard-0 system 9 RUNNABLE 24 0:0 false true
  5. 1074 as-selector-daemon system 9 RUNNABLE 12 0:0 false true
  6. 284 JMX server connection timeout 284 RMI Runtime 9 TIMED_WAITI 8 0:3 false true
  7. 16 Timer-1 main 5 TIMED_WAITI 5 0:9 false true
  8. 47 Pandora pandora-qos-reporter Pool main 5 TIMED_WAITI 0 0:0 false true
  9. 48 JmonitorClient-CheckThread Pool [ main 5 TIMED_WAITI 0 0:0 false true
  10. 49 JmonitorClient-HeartBeat Pool [Th main 5 TIMED_WAITI 0 0:0 false true
  11. 50 JmonitorClient-ReaderThread Pool main 5 TIMED_WAITI 0 0:0 false true
  12. 957 RMI TCP Connection(16)-30.10.166. RMI Runtime 9 RUNNABLE 0 0:2 false true
  13. 51 JmonitorClient-WriterThread Pool main 5 TIMED_WAITI 0 0:0 false true
  14. 52 ContainerBackgroundProcessor[Stan main 5 TIMED_WAITI 0 0:0 false true
  15. 53 http-bio-8080-Acceptor-0 main 5 RUNNABLE 0 0:2 false true
  16. 54 http-bio-8080-AsyncTimeout main 5 TIMED_WAITI 0 0:0 false true
  17. 11 GC Daemon system 2 TIMED_WAITI 0 0:0 false true
  18. Memory used total max usage GC
  19. heap 59M 223M 1820M 3.26% gc.ps_scavenge.count 118
  20. ps_eden_space 14M 114M 668M 2.11% gc.ps_scavenge.time(ms) 1890
  21. ps_survivor_space 6M 6M 6M 96.08% gc.ps_marksweep.count 5
  22. ps_old_gen 39M 103M 1365M 2.86% gc.ps_marksweep.time(ms) 1140
  23. nonheap 234M 240M 0M 97.46%
  24. code_cache 46M 47M 240M 19.49%
  25. metaspace 167M 172M 0M 97.36%
  26. Runtime Tomcat
  27. os.name Mac OS X connector http-bio-8080
  28. os.version 10.10.5 QPS 0.00
  29. java.version 1.8.0_60 RT(ms) 1.13
  30. java.home error/s 0.00
  31. received/s 0B
  32. systemload.average 3.44 sent/s 0B
  33. processors 4 threadpool http-bio-8080
  34. uptime 16020s busy 0

数据说明

  • ID: Java级别的线程ID,注意这个ID不能跟jstack中的nativeID一一对应
  • NAME: 线程名
  • GROUP: 线程组名
  • PRIORITY: 线程优先级, 1~10之间的数字,越大表示优先级越高
  • STATE: 线程的状态
  • CPU%: 线程消耗的cpu占比,采样100ms,将所有线程在这100ms内的cpu使用量求和,再算出每个线程的cpu使用占比。
  • TIME: 线程运行总时间,数据格式为分:秒
  • INTERRUPTED: 线程当前的中断位状态
  • DAEMON: 是否是daemon线程

截图展示

dashboard - 图1