Using jvmtop to analyze JIRA performance
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目的
This page outlines how to analyze JIRA application performance using Jvmtop.
- Jvmtop provides a overview of all running JVMs on a machine.
- Jvmtop can analyze a JVM process to get an idea of which threads are consuming CPU.
Jvmtop also includes a CPU console profiler.
Jvmtop is currently in alpha state.
See below for other examples on how to understand which threads in JIRA application are consuming a lot of CPU:
- Troubleshooting Jira performance with Thread dumps
- Use Windows Process Explorer to troubleshoot Jira server Performance
ソリューション
- Get a copy of Jvmtop
Jvmtop requires a JDK to run. If you're getting "<JAVA> seems to be no JDK!" then you would need to install JDK and switch to use the JDK instead of the default JRE.
Example of output from jvmtop:
$ jvmtop JvmTop 0.8.0 alpha - 17:57:33, x86_64, 8 cpus, Mac OS X 10.10., load avg 22.40 http://code.google.com/p/jvmtop PID MAIN-CLASS HPCUR HPMAX NHCUR NHMAX CPU GC VM USERNAME #T DL 366 243m 2031m 152m 446m 63.33% 0.11% A6U65 pkirkeby 76 819 moteMavenServer 55m 505m 31m 130m 14.07% 0.40% A6U65 pkirkeby 19 754 m.jvmtop.JvmTop 3m 235m 10m 130m 1.01% 0.29% O7U25 pkirkeby 16Example of output from jvmtop monitoring a specific process:
$ jvmtop <pid> JvmTop 0.8.0 alpha - 17:37:55, x86_64, 8 cpus, Mac OS X 10.10., load avg 2.22 http://code.google.com/p/jvmtop PID 17817: org.apache.catalina.startup.Bootstrap ARGS: start VMARGS: -Djava.util.logging.config.file=/Users/pkirkeby/Atlassian/deploym[...] VM: Oracle Corporation Java HotSpot(TM) 64-Bit Server VM 1.8.0_31 UP: 2:49m #THR: 111 #THRPEAK: 111 #THRCREATED: 184 USER: pkirkeby GC-Time: 0: 0m #GC-Runs: 123 #TotalLoadedClasses: 44485 CPU: 11.43% GC: 2.95% HEAP: 281m / 910m NONHEAP: 341m / n/a TID NAME STATE CPU TOTALCPU BLOCKEDBY 192 RMI TCP Connection(2)-172.20.0 RUNNABLE 3.82% 0.05% 87 atlassian-scheduler-quartz1.cl TIMED_WAITING 0.23% 0.39% 193 JMX server connection timeout TIMED_WAITING 0.17% 0.00% 84 atlassian-scheduler-quartz1.cl TIMED_WAITING 0.16% 0.56% 83 atlassian-scheduler-quartz1.cl TIMED_WAITING 0.15% 0.38% 80 jira-monitoring-plugin TIMED_WAITING 0.02% 0.06% 179 Java2D Disposer WAITING 0.01% 0.00% 110 Navlink Plugin Executor:thread WAITING 0.01% 0.02% 59 I/O dispatcher 6 RUNNABLE 0.01% 0.07% 119 http-bio-8080-AsyncTimeout TIMED_WAITING 0.01% 0.12% Note: Only top 10 threads (according cpu load) are shown!