Hello,

I am trying to graph the value of the "Opens" value produced by dbcheck when monitoring mysql.

I defined the value as DERIVE in NCV_mysql instead of GAUGE, as this is a value that is growing while the mysql instance is running (if the mysql instance restart it restarts from 0).

For instance, I have the following:

time | Opens | diff | graph'd | diff/graph'd | value | t'-t | value | value ------+-------+------+---------+------------- 10:14 | 22732 | - | - | - 10:19 | 22765 | +33 | 110m | 3.33 10:24 | 22806 | +41 | 128m | 3.12 10:29 | 22821 | +15 | 50m | 3.33 10:34 | 22835 | +14 | 48m | 3.2

I was expecting the graphed value to be equal to the diff value, but the units are wrong (m instead of unit), and the value is wrong as well (with a somewhat constant 3.xx ratio).

Any idea where this comes from? (I suspect this is me being stupid and not understanding some of the underlying rrd subtleties)

Cheers, Gildas