Queued Tracking - Queues not created

Hello All -

I am currently using a single threaded (single queue) based Redis configuration and everything looks good.

when we wanted to increase the concurrency and look for adding more queues, the configuration is done in the settings page as “4” for the “number of queued workers”.

I have cleared the caches and restarted httpd server. However I don’t see 4 workers whatever I do. All the requests are now getting sent to “trackingQueueV1_2”.

Is that a side effect of configuring the Load Balancing of the Web Matomo servers and HTTPD Apache configuration as “mpm prefork module”?

Thanks in advance.

Regds,
Sivakumar