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I would like to know how much bandwidth is being used on my server. Not HTTP bandwidth, but all protocols. Basically iftop data over time continuously logged. Then I could write a simple python script to process it and provide aggregate info.

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Have you tried ntop? – llua Nov 15 '12 at 13:13
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Take a look at vnstat. – jw013 Nov 15 '12 at 14:34
That looks promising, trying now – Ronaldo Nascimento Nov 15 '12 at 20:07
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Are you already logging with sysstat's sar? You might have everything you need already. – JodieC Nov 19 '12 at 23:07

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up vote 4 down vote

instead of writing it all new,
you could use tools like cacti.
With it you can analyze your network.

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up vote 3 down vote

I use ntop for things like this. There are a few ways you can store and generate reports with it.

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I will look into this, I think I avoided ntop because it installed too much stuff. – Ronaldo Nascimento Nov 15 '12 at 20:07

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