From: Kaushal Shriyan kaushalshriyan@gmail.com
Are there any utilities or tools to look at historical data of Memory, CPU Utilization or IO activity on CentOS 6.4 or 5.9 Version? For example the how much the memory was consumed for the period of last six months.
The most lightweight, if you do not mind scripting a little bit, would be a "simple" cron script calling rrdtool. You can find many rrdtool examples online.
JD