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Chapter 13. Server Software > Common Server Parameters

13.2. Common Server Parameters

Server vendors try to tune their servers as best they can for general use before they send them out to you. They certainly want you to get high performance. The reason you might change things is that you know more about your particular needs than they do.

13.2.1. Number of Processes

You'll get better performance by running only the number of server processes your RAM can hold. If you run too many, you'll start swapping and performance for each will drop. If you can run only 32 server processes in RAM, then don't try to run any more than that, even if you often have more than 32 concurrent users. You can configure the number of httpd processes in Apache with the Max- Clients directive. You don't want to run too few httpd processes either, because you need enough processes so that fast clients never have to wait for a slow client to finish and free up a process.


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