On Wed, Mar 23, 2016 at 8:17 PM Shawn Heisey <user-ac4ace431568@xymon.invalid> wrote:
All four of these lines have been in the config for a long time, but the
mule_aps and mule_nwsi tracking identifiers *used* to be ajp, the same
as the 8009 port line. So I had three lines all using "ajp" as the
tracking ID.
I think this explains it. RRD only permits one update per (by default)
5-minute interval, and any subsequent ones are rejected. If you had 3
updates going on every 5 minutes, only the first would have been accepted.
So if mule_aps or mule_nwsi were both reporting NaN then it's possible that
only 1/3 or all updates had valid data. Your graph seems to show about 1/3
present, and 2/3 missing.
J