Hi, I have a problem reading sar data. I have some server but no monitoring tools like cacti or nagios on it. every end of month I got the sar log manually and have to generate report for it but I have no idea how to read it. on this page :http://pagesperso-orange.fr/sebastien.godard/tutorial.html i found there is tool called sadf, can i use it on CentOS 4 or it just available on Centos 5? I found sadf on centos5 but not on centos 4. are there any tools that could be used to generate a graphic from a month historical sar data? best regards, -- Muhammad Panji http://sumodirjo.wordpress.com