rrdgraph_examples

Langue: en

Version: 2007-05-02 (mandriva - 22/10/07)

Section: 1 (Commandes utilisateur)

NAME

rrdgraph_examples - Examples for rrdtool graph

SYNOPSIS

rrdtool graph /home/httpd/html/test.png --img-format PNG

followed by any of the examples below

DESCRIPTION

For your convenience some of the commands are explained here by using detailed examples. They are not always cut-and-paste ready because comments are intermixed with the examples.

EXAMPLES


Data with multiple resolutions

     --end now --start end-120000s --width 400
     DEF:ds0a=/home/rrdtool/data/router1.rrd:ds0:AVERAGE
     DEF:ds0b=/home/rrdtool/data/router1.rrd:ds0:AVERAGE:step=1800
     DEF:ds0c=/home/rrdtool/data/router1.rrd:ds0:AVERAGE:step=7200
     LINE1:ds0a#0000FF:"default resolution\l"
     LINE1:ds0b#00CCFF:"resolution 1800 seconds per interval\l"
     LINE1:ds0c#FF00FF:"resolution 7200 seconds per interval\l"
 
 

Nicely formatted legend section

     DEF:ds0=/home/rrdtool/data/router1.rrd:ds0:AVERAGE
     DEF:ds1=/home/rrdtool/data/router1.rrd:ds1:AVERAGE
     VDEF:ds0max=ds0,MAXIMUM
     VDEF:ds0avg=ds0,AVERAGE
     VDEF:ds0min=ds0,MINIMUM
     VDEF:ds0pct=ds0,95,PERCENT
     VDEF:ds1max=ds1,MAXIMUM
     VDEF:ds1avg=ds1,AVERAGE
     VDEF:ds1min=ds1,MINIMUM
     VDEF:ds1pct=ds1,95,PERCENT
 
 

Note: consolidation occurs here.

     CDEF:ds0bits=ds0,8,*
     CDEF:ds1bits=ds1,8,*
 
 

Note: 10 spaces to move text to the right

     COMMENT:"          "
 
 

Note: the column titles have to be as wide as the columns

     COMMENT:"Maximum    "
     COMMENT:"Average    "
     COMMENT:"Minimum    "
 
 
     COMMENT:"95th percentile\l"
     AREA:ds0bits#00C000:"Inbound "
     GPRINT:ds0max:"%6.2lf %Sbps"
     GPRINT:ds0avg:"%6.2lf %Sbps"
     GPRINT:ds0min:"%6.2lf %Sbps"
     GPRINT:ds0pct:"%6.2lf %Sbps\l"
     LINE1:ds1bits#0000FF:"Outbound"
     GPRINT:ds1max:"%6.2lf %Sbps"
     GPRINT:ds1avg:"%6.2lf %Sbps"
     GPRINT:ds1min:"%6.2lf %Sbps"
     GPRINT:ds1pct:"%6.2lf %Sbps\l"
 
 

Offsetting a line on the y-axis

Depending on your needs you can do this in two ways:

Offset the data, then graph this
     DEF:mydata=my.rrd:ds:AVERAGE
 
 

Note: this will also influence any other command that uses ``data''

     CDEF:data=mydata,100,+
     LINE1:data#FF0000:"Data with offset"
 
 
Graph the original data, with an offset
     DEF:mydata=my.rrd:ds:AVERAGE
 
 

Note: no color in the first line so it is not visible

     LINE1:100
 
 

Note: the second line gets stacked on top of the first one

     LINE1:data#FF0000:"Data with offset":STACK
 
 

Time ranges

     Last four weeks: --start end-4w --end 00:00
     January 2001:    --start 20010101 --end start+31d
     January 2001:    --start 20010101 --end 20010201
     Last hour:       --start end-1h
     Last 24 hours:   <nothing at all>
     Yesterday:       --end 00:00
 
 

Viewing the current and previous week together

     --end now --start end-1w
     DEF:thisweek=router.rrd:ds0:AVERAGE
     DEF:lastweek=router.rrd:ds0:AVERAGE:end=now-1w:start=end-1w
 
 

Shift the data forward by one week (604800 seconds)

     SHIFT:lastweek:604800
     [ more of the usual VDEF and CDEF stuff if you like ]
     AREA:lastweek#0000FF:Last\ week
     LINE1:thisweek#FF0000:This\ week
 
 

SEE ALSO

rrdgraph gives an overview of how rrdtool graph works. rrdgraph_data describes DEF,CDEF and VDEF in detail. rrdgraph_rpn describes the RPN language used in the xDEF statements. rrdgraph_graph page describes all the graph and print functions.

Make sure to read rrdgraph_examples for tips&tricks.

AUTHOR

Program by Tobias Oetiker <tobi@oetiker.ch>

This manual page by Alex van den Bogaerdt <alex@ergens.op.het.net>