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I am experiencing very high traffic on a mongodb database, since we pay per traffic I would like to understand which queries/collections are responsible for most of the traffic to understand what we have to reduce.

I tried the common tools like mongotop, but that does show only the time calculating, which is not always the same as the reason for the high bandwidth. Also tried wireshark, but the data is simply too much to find the main source by hand.

When trying mongoreplay record the outcome is only around 10% of what is transferred (at least iptraf is sure it is much higher). Had to increase the --capSize to 60000 to stop the loss of packets.

Now I have my dump, but using mongoreplay monitor does end up in "unexpected EOF".

Any ideas on alternatives?

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