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Part III: Appendixes > Hardware and Operating System Issues

B.2. Hardware and Operating System Issues

The single biggest hardware issue affecting web server performance is RAM. A web server should never ever have to swap: swapping increases the latency of each request beyond a point that users consider fast enough. This causes users to hit Stop and reload, further increasing the load. You can, and should, control the MaxClients setting so that your server does not spawn so many children it starts swapping.

Beyond that, the rest is mundane: get a fast enough CPU, a fast enough network card, and fast enough disks, where "fast enough" is something that needs to be determined by experimentation.


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