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OpenSource management tool for measuring and reporting on power efficiency of Servers

I would like to measure the power efficiency of servers (virtualized) using an opensource management tool like Nagios or OpenNMS. Cacti also might be useful for it's historical graphing capabilities, ...
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1answer
490 views

openvz graphing user_beancounters

We run a cluster of openvz servers and are looking for a way to automatically graph the content of user_beancounters for all ves. We currently have a fairly rudimentary cron which alerts us when ...