HI first of all sorry for my bad english. I use apache 2.4 and mpm_event. I try set a ServerLimit value to 40 and Max Request Workers to 100, and get this error So is the same error when try set a highest value of serverlimit than Request Workers using prefork. But that error using prefork is normal, I understand it. The problem here is if I set default cpanel value to apache using mpm_event I get overload, so Code: Serverlimit 256 Max Request Workers 150 Using event thats mean than apache can start 256 servers and each server can handle 150 request so 256 * 150 = 34800 request I dont know if I dont understand how working mpm_Event ( but I think I undestand it ) Is like nginx workers Code: [B]worker_processes 1[/B]; = ServerLimit [B]worker_connections 600[/B]; = Max Request Workers Is something like that. Now I say this because I have some servers whit 7k online people on analytics but are 150 to 400 req/s and apache overload the server until than I change serverlimit value So if I do something like this: Code: Serverlimit 256 Max Request Workers 150 I get a lot of apache process ( 256 ) And load average go up until 150 But if I manually change that from ssh to Code: ServerLimit 40 Max Request Workers 400 I get only 40 I get 40 apache process, and serverload of 5 and site response is in only on 1s. So the point is than I cant set a ServerLimit value lower than Max Request Workers I untherstand it if I use prefork but whit event I have alot of problems. The same problem I get before whit worker, whit worker serverlimit value is very low so works similar to event, here the default mpm_worker config from apache's site: Code: ServerLimit 16 StartServers 2 MaxRequestWorkers 150 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 25 So if you try put it vía WHM using worker you get error like this: And the last problem here is than I set Max Request Workers and cpanel say cant change maxclients I test this on 5 servers and get same error. I hope you understandme, I try to report a bug ( if is bug ) but dont see any bugtracker or bug report category.