first, I ran this free -m command, below is the output: It shows 209M SWAP being used, right? To see what uses the memory, I ran 'top', below is the output: It looks to me that apache uses much of the SWAP memory, I wonder what I can do to reduce the SWAP usage? ps: my server specs: RAM: 256M OS: CentOS 5.1 Webmin + Virtualmin Apache MySQL 5 PHP 5.2.5 Postfix This is a test server hosting 4 websites which all have low traffic.
install htop and see whats running type in "setup" ( if on an redhat core OS (fedora/centos/redhat) to see whats services are running google them to find out what they do BEFORE turning them off if you dont have local access it