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After a fresh boot and login (Ubuntu 18.04), I left the computer on like this for about 30 minutes. When I came back, I saw on the LTE router display. that some process downloaded almost 1 GiB in that time.

I confirmed it with vnstat, but I didn't menage to find out what process has used this data.

I can't think of any application that I have, that would do this.

My questions are:

  1. Can it be an innocent operating system process?
  2. Is it possible to discover retroactively what process downloaded so much data? (I have only vnstat installed).
Greenonline
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raban
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1 Answers1

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nethogs enabled me to see data consumption by process name. with nethogs installed, I waited for another event of "mysterious data consumption". and found out it was freshclam process, belongs to ClamAV.

see this question:Freshclam is Using Lots of Mobile Data

Tejas Lotlikar
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raban
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