If you are asking about this because you are concerned about processor load affecting the number of clients that can connect, in Apache 2.2 the amount of memory

If you are asking about this because you are concerned about processor load affecting the number of clients that can connect, in Apache 2.2 the amount of memory and the Apache settings will have some bearing on this also. For instance, the Apache MaxClients setting formula many follow is, MaxClients = Total RAM dedicated to the web server / Max child process size. Child process size for serving static file is about 2-3M. For dynamic content such as PHP, it may be around 15M. More memory = more connections. Apache server performance can be improved by adding additional hardware resources such as RAM, faster CPU etc. but you might be able to achieve the same results with some simple custom Apache configurations on your current setup. Here is a link for Apache 2.2.3 if you are interested: http://cloudservers.rackspacecloud.com/index.php/Configuring_Apache_for_Maximum_Performance http://cloudservers.rackspacecloud.com/index.php/Configuring...