Many MySQL, Apache und named processes eat all the RAM

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http://ubuntuforums.org – Hi all. I run a VPS on Ubuntu Server 10.04. The server has something about 750 Mb RAM, which is, soon after the server has started, almostly all consumed by numerous mysqld, named and apache2 processes: https://dl.dropboxusercontent.com/u/...2013.54.38.png There are 2-4 websites with very little traffic running on this server. Can I somehow optimise this or I simply need more RAM? I think there is something wrong, that a server without any serious workload consumes so much memory. (Hardware)