mrtg-logfile.1
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- .IX Title "MRTG-LOGFILE 1"
- .TH MRTG-LOGFILE 1 "2006-02-03" "2.13.2" "mrtg"
- .SH "NAME"
- mrtg-logfile - description of the mrtg-2 logfile format
- .SH "SYNOPSIS"
- .IX Header "SYNOPSIS"
- This document provides a description of the contents of
- the mrtg-2 logfile.
- .SH "OVERVIEW"
- .IX Header "OVERVIEW"
- The logfile consists of two main sections.
- .IP "The first Line" 4
- .IX Item "The first Line"
- It stores the traffic counters from the most recent run of mrtg.
- .IP "The rest of the File" 4
- .IX Item "The rest of the File"
- Stores past traffic rate averates and maxima at increassing
- intervals.
- .PP
- The first number on each line is a unix time stamp. It represents
- the number of seconds since 1970.
- .SH "DETAILS"
- .IX Header "DETAILS"
- .Sh "The first Line"
- .IX Subsection "The first Line"
- The first line has 3 numbers which are:
- .IP "A (1st column)" 4
- .IX Item "A (1st column)"
- A timestamp of when s-1MRTGs0 last ran for this interface. The timestamp is the
- number of non-skip seconds passed since the standard s-1UNIXs0 *(L"epoch*(R" of midnight
- on 1st of January 1970 s-1GMTs0.
- .IP "B (2nd column)" 4
- .IX Item "B (2nd column)"
- The *(L"incoming bytes counter*(R" value.
- .IP "C (3rd column)" 4
- .IX Item "C (3rd column)"
- The *(L"outgoing bytes counter*(R" value.
- .Sh "The rest of the File"
- .IX Subsection "The rest of the File"
- The second and remaining lines of the file contains 5 numbers
- which are:
- .IP "A (1st column)" 4
- .IX Item "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.
- .Sp
- This timestamp may be converted in OpenOffice Calc or s-1MSs0 Excel by using the
- following formula
- .Sp
- .Vb 1
- & =(x+y)/86400+DATE(1970;1;1)
- .Ve
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- (instead of *(L";*(R" it may be that you have to use *(L",*(R" this depends on the context and your locale settings)
- .Sp
- you can also ask perl to help by typing
- .Sp
- .Vb 1
- & perl -e 'print scalar localtime(x),"en"'
- .Ve
- .Sp
- &fBxfR is the unix timestamp and fByfR is the offset in seconds
- from s-1UTCs0. (Perl knows fByfR).
- .IP "B (2nd column)" 4
- .IX Item "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.
- .IP "C (3rd column)" 4
- .IX Item "C (3rd column)"
- The average outgoing transfer rate in bytes per second since the previous
- measurement.
- .IP "D (4th column)" 4
- .IX Item "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 interval. 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.
- .IP "E (5th column)" 4
- .IX Item "E (5th column)"
- The maximum outgoing transfer rate in bytes per second for the current interval.
- .SH "AUTHOR"
- .IX Header "AUTHOR"
- Butch Kemper <kemper@bihs.net> and
- Tobias Oetiker <oetiker@ee.ethz.ch>