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falco/userspace
Mark Stemm 7db8e0921c Add ability to write capture stats to a file.
With -s, periodically fetch capture stats from the inspector and write
them to the provided file.

Separate class StatsFileWriter handles the details. It does rely on a
timer + SIGALRM handler so you can only practically create a single
object, but it does keep the code/state separate.

The output format has a sample number, the set of current stats, a
delta with the difference from the prior sample, and the percentage of
events dropped during that sample.
2016-12-22 12:55:36 -08:00
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