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In some cases, it is necessary to investigate which WCS thread loads servers' CPU and how much. To do this:

1. Find WCS core pid with command

ps aux | grep java



2. Get the process thread dump with jstack

jstack 4240 >> 4240.jstack

Here 4240 is WCS pid found on step 1.

The file received as a result of executing this command will be the following

Here you can get thread names, states and its identifiers in hexadecimal form in 'nid' field

3. Execute the command

top -H -p 4240

Here 4240 is WCS pid found on step 1.

The process threads will be displayed to console with their CPU and memory consumption

Threads identifiers in decimal form are in the 'PID' column. The thread can be found by this identifier in file formed on step 2, so the tread name can be defined.

4. If it is necessary, send to for further investigation

  • The file formed on step 2
  • Top command screenshot from step 3
  • Thread name defined on step 3
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