Backstory: We have monitoring configured on our JIRA instance that monitors memory (heap commited, used, code cache size, amount used etc), disk space, read/write speed, threads allocated / used, we monitor cpu usage overall and on a per core basis, etc.
Ask: The one item I really feel is missing, the one that I want to monitor most of all is individual plugin performance.
Does anyone know of a way to dive deeper to get stats on what each plugin in JIRA is taking away (CPU, memory, threads)?
One thing that comes to my mind is get thread dumps + CPU information and check the percentage of CPU a given thread is using. You can do this with the following command: ps -Lo pcpu,pid,lwp -p 15503 (where 15503 is the proccess id).
Then you can map the thread that refers to the classes of a given plugin and compare with the CPU info.
The secret is that you need to convert the nid from the threads and convert to decimal. Example:
"ajp-bio-8085-exec-835" daemon prio=10 tid=0x000000001f1ac000 nid=0x3471 runnable [0x00000000658a9000] java.lang.Thread.State: RUNNABLE
nid=0x3471 is 13425, which can be used against the CPU information:
$ grep 13425 jira-cpu-usage-09_1* %CPU PID LWP 15.2 17314 13425
I hope it helps.
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