No improvement on Historical CPU performance with increasing druid.processing.numThread

I tried increasing historical druid.processing.numThread from 15 to 30 and to 60 as well. But I don’t see any improvement in performance or CPU Usage.

How to utilize full CPU for historicals?

Hi Shilpa,

You shouldn’t be simply increasing druid.processing.numThread. The max value should be (Number of cores available in the server -1). Please refer https://druid.apache.org/docs/latest/configuration/index.html

How many cores do you have in the physical machine?

Thanks!

Manu