http://www.cyberciti.biz/faq/linux-check-memory-usage/ http://www.cyberciti.biz/faq/linux-check-memory-usage/ minimum http://www.cyberciti.biz/faq/linux-check-memory-usage http://www.cyberciti.biz/faq/linux-check-memory-usage/ http://www.cyberciti.biz/faq/linux-check-memory-usage http://www.cyberciti.biz/faq/linux-check-memory-usage/ Blog : Linux Check Memory Usage Memory Usage