[rrd-users] Re: Division Bug with RRDTool

Serge Maandag serge.maandag at staff.zeelandnet.nl
Fri Dec 2 20:58:25 MET 2005

> I´m making graphs with rrdtool, but I think that the the 
> percentage values do not correspond the reality. I am using 
> template graphs.mf without no alteration in expressions RPN.

Can't say I ever heard of "template graphs.mf".

> Expressions:
> DEF_subnet_out_bytes =
> DEF:xsubnet_out_bytes=$(rrddir)/subnet.rrd:out_bytes:AVERAGE
> DEF_subnet_in_bytes =
> ......
> div_Mbps        = 0.272552    (subnet_Mbps/TOTAL_Mbps) 
> <========== error
> But, using a calculator, 0.040251/0.079754 = 0.504689
> I would like to know what´s happening?

Well these can't be the commands you used.
You have empty DEF lines and no PRINT/GPRINT lines.

Post the ones you did use, otherwise noone can help you..


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