mrtg-logfile.txt
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- MRTG-LOGFILE(1) mrtg MRTG-LOGFILE(1)
- NNAAMMEE
- mrtg-logfile - description of the mrtg-2 logfile format
- SSYYNNOOPPSSIISS
- This document provides a description of the contents of
- the mrtg-2 logfile.
- OOVVEERRVVIIEEWW
- The logfile consists of two main sections.
- The first Line
- It stores the traffic counters from the most recent
- run of mrtg.
- The rest of the File
- Stores past traffic rate averates and maxima at incre-
- assing intervals.
- The first number on each line is a unix time stamp. It
- represents the number of seconds since 1970.
- DDEETTAAIILLSS
- TThhee ffiirrsstt LLiinnee
- The first line has 3 numbers which are:
- A (1st column)
- A timestamp of when MRTG last ran for this interface.
- The timestamp is the number of non-skip seconds passed
- since the standard UNIX "epoch" of midnight on 1st of
- January 1970 GMT.
- B (2nd column)
- The "incoming bytes counter" value.
- C (3rd column)
- The "outgoing bytes counter" value.
- TThhee rreesstt ooff tthhee FFiillee
- The second and remaining lines of the file contains 5 num-
- bers which are:
- A (1st column)
- The Unix timestamp for the point in time the data on
- this line is relevant. Note that the interval between
- timestamps increases as you prograss through the file.
- At first it is 5 minutes and at the end it is one day
- between two lines.
- This timestamp may be converted in OpenOffice Calc or
- MS Excel by using the following formula
- =(x+y)/86400+DATE(1970;1;1)
- (instead of ";" it may be that you have to use ","
- this depends on the context and your locale settings)
- you can also ask perl to help by typing
- perl -e 'print scalar localtime(x),"n"'
- xx is the unix timestamp and yy is the offset in seconds
- from UTC. (Perl knows yy).
- B (2nd column)
- The average incoming transfer rate in bytes per sec-
- ond. This is valid for the time between the A value of
- the current line and the A value of the previous line.
- C (3rd column)
- The average outgoing transfer rate in bytes per second
- since the previous measurement.
- D (4th column)
- The maximum incoming transfer rate in bytes per second
- for the current interval. This is calculated from all
- the updates which have occured in the current inter-
- val. If the current interval is 1 hour, and updates
- have occured every 5 minutes, it will be the biggest 5
- minute transfer rate seen during the hour.
- E (5th column)
- The maximum outgoing transfer rate in bytes per second
- for the current interval.
- AAUUTTHHOORR
- Butch Kemper <kemper@bihs.net> and Tobias Oetiker
- <oetiker@ee.ethz.ch>
- 2.13.2 2006-02-03 MRTG-LOGFILE(1)