Hi Tony,2017-08-31 23:43 GMT+02:00 Tony DiLoreto <tony@xxxxxxxxxxxxxxxxxxxxxxxx>:Hi All,I've been scouring the internet for best practices or heuristics for specifying parameter values of the MPM directives. My server seems to lock up regardless of the values I enter. Are there "rules of thumb" for each MPM type (prefork, worker, event)?Can you tell us what do you mean with "lock up"?Luca