On Tuesday 04 April 2006 08:12, Jon wrote: > I have 160MB RAM on my VPS (yes, I know I need more, but that's for another > day) and whenever I log on and check, it's always used up down to the last > 2-3MB, but not swapping yet. One part of me says that's good - Linux is > using as much real memory as possible before swapping. The other part of me
the important numbers in you screenshots there are the buffers/cached entries... you'll see that you have 92MB or so of buffers/cache, and really "only" <69MB actually used. the buffers and caches are used to store recently accessed files (among other bits of fun) in memory so that the kernel doesn't have to hit disk again (moving atoms is ++slow) when accessing that data. view it as a dynamic, transparent ram disk that uses whatever RAM your apps aren't, resulting in a snappier system. > there's an awful lot of apache2 and mysqld processed running. both of these servers spawn multiple processes or threads (depending on how they are configured) so you'll see them multiple times in the listings. each process has a bit of overhead (and you can tune how many of these get launched at once) but allow for snappy response to incoming requests. essentially there's a pool of workers that just wait for the next call to action (client request). hth. -- Aaron J. Seigo GPG Fingerprint: 8B8B 2209 0C6F 7C47 B1EA EE75 D6B7 2EB1 A7F1 DB43 Full time KDE developer sponsored by Trolltech (http://www.trolltech.com)
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