CPU load investigation

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
   

   pgrep -fn com.flashphoner.server.Server
   

   or
   

   top
   

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 look as follows
   
   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 thread name can be defined.