linux-crazy wrote: > Hi all, > > I am facing facing performance issues with our web servers which is > working for concurrent 250 requests properly and then stops > responding when the requests are more than 250 . Increase your MaxClients configuration, also enable if you haven't already the server-status module and monitor the server via http://<your server name>/server-status it will show how many workers are busy and what they are doing. As for which to use, prefork is the old forked method of doing things, the other uses threads. Depending on what kind of application your running on top of apache, if it is not thread safe(at some point many PHP modules were not thread safe), you may want to use prefork. Otherwise you can use the threading model. If your not sure I'd say stick to prefork to be safe until you can determine for sure that threading is safe. nate