PCTips.us

MaxClients defines how many simultaneous requests can be served. Any connection requests from browsers that come in after that will be queued. Default hard limit of 256.
Is ok to set high for static content, but bad for rendered pages.
MaxSpareServers
MinSpareServers
StartServers
ServerLimit
Thrashing where the system is just swapping pages from physical memory to virtual memory (on disk), and [...]