inner slow-w-len metric

[Karsonito]

Hello!
Please explain what inner slow-w-len metric means?
Periodically I get 1 as value. Which settings should be tuned if something wrong?

[Albibek]

This metric shows the queue length for tasks performed at slow threads. As slow threads can be of heavy calculations, 1 is most probably not the issue you should worry about.
If it goes too high, you may try increasing the number of worker threads (w-threads). There is also task-queue-size parameter, but it's default value 1024, setting it to a higher one will most probably give you nothing than increased memory consumption.

[Karsonito]

Thanks for explaining!