[rrd-users] Values stored in rrd file does not match original values

[pidou46]

Hello,

I've build an application to monitor my heating system.

I keep in a log file the values I give to rrdtool by the update function.

When I proceed a fectch on a certain amount of time, the values doesn't
match the values I've stored in the log file.

Here is an extract:

counter1.rrd			monitor.log					
t (s)	dt (s)	d conso Wh/min	t (s)	dt (s)	imp	d imp	d conso Wh/min	
			1389896849,21		225061			
1389896880		0,025	1389896910,31	61,0999999046	225065	4	2	80,43956044
1389896940	60	0,115	1389896971,41	61,1000001431	225088	23	11,5
100,2142857149
1389897000	60	0,498	1389897032,50	61,0899999142	225188	100	50	100,4390779364
1389897060	60	0,850	1389897093,60	61,0999999046	225297	109	54,5
64,0970437021
1389897120	60	1,025	1389897154,70	61,1000001431	225443	146	73	71,1910471599
1389897180	60	1,282	1389897215,80	61,0999999046	225613	170	85	66,3043478269
1389897240	60	1,311	1389897276,90	61,1000001431	225758	145	72,5
55,2812500015
1389897300	60	1,079	1389897338,00	61,0999999046	225871	113	56,5
52,3476237122
1389897360	60	0,818	1389897399,10	61,0999999046	225953	82	41	50,0921758235
1389897420	60	0,454	1389897460,20	61,1000001431	225958	5	2,5	5,5054151624
1389897480	60	0,038	1389897521,30	61,0999999046	225961	3	1,5	39,2142857145
1389897540	60	0,022	1389897582,40	61,1000001431	225965	4	2	92,6582278462
1389897600	60	0,033						
								64,8153617534
		7,551					452	0,0167059577

I hope it will be readable, of course I can deliver a pdf if needed.

The values given to update is "d conso Wh/min"  in monitor.log

The values fetched from rrd file is also "d conso Wh/min"

When reading the first to line it seems like I have a 100 factor but later
it doesn't match.

The DEF is a COUNTER and I made an AVERAGE every minute.

I can also provide rrd file, and code extract from my python script.

An idea ?

Thanks



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