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Is there any straightforward record/poll of long term load record instead of the usual 1,5,15 minute load values?

Background: Trying to convince faculty that current cluster solution is underutilized XX% of the time and could be used for BOINC / etc during periods of 'silence'

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up vote 1 down vote accepted

Check out Cacti and RRDtool. You can use them to poll, record, and display aggregated results as graphs the performance of just about anything on a server. There are plenty of templates available to get you started recording server data.

From RRDtool's webpage:

RRDtool is the OpenSource industry standard, high performance data logging and graphing system for time series data.

From Cacti's webpage:

Cacti is a complete network graphing solution designed to harness the power of RRDTool's data storage and graphing functionality. Cacti provides a fast poller, advanced graph templating, multiple data acquisition methods, and user management features out of the box. All of this is wrapped in an intuitive, easy to use interface that makes sense for LAN-sized installations up to complex networks with hundreds of devices.

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You could install Munin on it.

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