Re: slashdot stats?

Mark Musone wrote: > This is the exact same problem i had with some of my servers... > if max clients is more than the available memory, apache will start > out fine...then a few minutes later, cpu skyrockets... > > apache REALLY isn't happy when the OS goes into swap.. When you think about that, it is only logical. Apaches reaction to more load (actually, to more pending requests) is to create more clients. If you go into swap, servicing requests takes longer due to swapping and in the meantime more requests pile up. Apache will react to this by creating more clients, which will drive the machine only further into swap, making it even slower. Which will in turn trigger spawning more clients. This is a vicious circle and it is only broken by MaxClients. Correct tuning of MaxClients is the key to stable Apache performance. Kristian -- Kristian Köhntopp, NetUSE Kommunikationstechnologie GmbH Siemenswall, D-24107 Kiel, Germany, +49 431 386 436 00 Using PHP3? See our web development library at http://phplib.shonline.de/ (GPL)