Why is not my openlitespeed configuration using my all cpu ram resources?

#1
I have openlitespeed server configuration under ubuntu 24 for wordpress hosting. I am testing it with apachebenchmark tool but what ever I try to do it is not going over 1.5 gigs of ram and %40 cpu usage.
How can I increase the parameters so it will be able to use full resources?
Thank you in advance.
 
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