Hello Andy,
it's the process where actual playback runs. One process hosts one playback so we use multiple processes to increase playback capacity. If you have player on main poller it should have only 2 workers, not 10. But if you installed it manually and it's not out-of-the-box installation then it defaults to 10. You can change configuration to lower the number of processes sand lower to overall load on the poller.
- Open "c:\Program Files (x86)\SolarWinds\Orion\SEUM\Player\SolarWinds.SEUM.Agent.Service.exe.config" in notepad
- Find <agentConfiguration ...> element around line 8.
- Find attribute "numWorkerProcesses" and set it to "2". If the attribute is not present add it. Result should look like: <agentConfiguration ... numWorkerProcesses="2" ... />
- Save changes.
- Restart WPM Player.
It will now use only 2 workers. It lowers the playback capacity because it's now able to play only 2 transactions in parallel but it has smaller impact on poller.