[rrd-users] Please help on COUNTER

[Andy_O]

Please help me to clarify the COUNTER;
1. Should it records and displays the difference between previous and
present values? 
2. As per data recorded bellow, the graph shows nothing about the values nor
the difference. What is not correct?
3. What does "m" mean written on the Y-axis on the graph ?

I have created the following:
rrdtool create MyData.rrd --step 300 DS:success:COUNTER:600:U:U
DS:cancel:COUNTER:600:U:U DS:fail:COUNTER:600:U:U RRA:AVERAGE:0.5:1:288
RRA:AVERAGE:0.5:6:336 RRA:LAST:0.5:12:720 RRA:LAST:0.5:24:4272


The generated graph:
http://n2.nabble.com/file/n4624590/test1.png 

Using this:
rrdtool graph -w 400 -h 200  "test1.png" -e now-10h -s end-3h  -c
BACK#FFFFFF  DEF:vsuccess=myData.rrd:success:AVERAGE 
DEF:vcancel=myData.rrd:cancel:AVERAGE  DEF:vfail=myData.rrd:fail:AVERAGE  
LINE3:vsuccess#FF0000:"Success" LINE3:vcancel#00FF00:"Cancel"
LINE3:vfail#0000FF:"Fail"


The values:

Date/Time	Success	Cancel	Fail
2010-02-23 20:03:47	2528	151	1925
2010-02-23 20:08:51	2530	151	1925
2010-02-23 20:13:54	2531	151	1925
2010-02-23 20:18:59	2531	151	1926
2010-02-23 20:24:02	2531	151	1927
2010-02-23 20:29:06	2532	151	1927
2010-02-23 20:34:09	2532	151	1928
2010-02-23 20:39:13	2534	151	1928
2010-02-23 20:44:18	2536	151	1928
2010-02-23 20:49:21	2540	151	1928
2010-02-23 20:54:25	2540	151	1928
2010-02-23 20:59:28	2540	151	1928
2010-02-23 21:04:33	2540	151	1928
2010-02-23 21:09:37	2540	151	1928
2010-02-23 21:14:40	2540	151	1931
2010-02-23 21:19:45	2541	151	1931
2010-02-23 21:24:49	2543	151	1931
2010-02-23 21:29:52	2543	151	1931
2010-02-23 21:34:56	2543	152	1931
2010-02-23 21:39:59	2543	152	1931
2010-02-23 21:45:04	2543	152	1931
2010-02-23 21:50:08	2543	152	1931
2010-02-23 21:55:11	2543	152	1931
2010-02-23 22:00:15	2543	152	1933
2010-02-23 22:05:18	2543	152	1933
2010-02-23 22:10:22	2544	152	1933
2010-02-23 22:15:25	2545	152	1933
2010-02-23 22:20:30	2545	152	1933
2010-02-23 22:25:33	2545	152	1933
2010-02-23 22:30:37	2545	152	1934
2010-02-23 22:35:40	2545	152	1934
2010-02-23 22:40:44	2545	152	1935
2010-02-23 22:45:48	2545	152	1935
2010-02-23 22:50:51	2545	152	1935
2010-02-23 22:55:55	2545	152	1935






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