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MRTG-LOGFILE(1) 		      mrtg			 MRTG-LOGFILE(1)

NAME
     mrtg-logfile - description of the mrtg-2 logfile format

SYNOPSIS
     This document provides a description of the contents of the mrtg-2 logfile.

OVERVIEW
     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 averages and maximum at increasing intervals.

     The  first number on each line is a unix time stamp. It represents the num-
     ber of seconds since 1970.

DETAILS
   The first Line
     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.

   The rest of the File
     The second and remaining lines of the file contains 5 numbers which are:

     A (1st column)
	 The Unix timestamp for the point in time the data on this line is rele-
	 vant.	 Note  that  the  interval  between  timestamps increases as you
	 progress 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"'

	 x is the unix timestamp and y is the offset in seconds from UTC.  (Perl
	 knows y).

     B (2nd column)
	 The  average  incoming transfer rate in bytes per second. 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 previ-
	 ous 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 occurred
	 in the current interval. If the current interval is 1 hour, and updates
	 have occurred 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.

AUTHOR
     Butch Kemper <kemper@bihs.net> and Tobias Oetiker <tobi@oetiker.ch>

2.17.10 			   2022-01-19			 MRTG-LOGFILE(1)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=mrtg-logfile&sektion=1&manpath=FreeBSD+Ports+15.1.quarterly>

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