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Any recommendations for a free tool to profile memory/swap/cpu usage on Linux (Ubuntu), preferably with graphical timeline charts?

I'm thinking of something like ntop but for memory i.e. that provides a web interface into the data collected (as this will be running on a remote server).

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up vote 2 down vote accepted

I use:
Orca -
Munin -

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zabbix, nagios.... – Javier Jul 13 '11 at 15:22
munin seems pretty good, especially since a quick 'sudo apt-get install munin' does the job. – Joel Jul 13 '11 at 16:11

An excellent tool for doing demand monitoring is nmon.

Available for AIX and Linux, it captures a large amount of system stats and there is an Excel spreadsheet available on the site to turn all the data into sexy graphs.

For doing long-term monitoring, the other options presented (Orca, Munin, Spong, Nagios, etc.) are better options.

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