[opennms-devel] a bit of jrobin development

[Ron R. <ro...@el...>]

I've been hacking a little bit on jrobin, implementing missing RPN/VDEF 
operators in jrobin that exist in rrdtool.

You can checkout the current state of things at: 
https://github.com/roskens/jrobin.git

One thing that has been bugging me is when comparing the xport outputs 
there are some off by one/two errors.

The first one I found is that given a specific start time, jrobin is 
consistently 1 period earlier than rrdtool (and hence 1 period longer).

rrdtool also goes beyond the end time. If you had a step size of 5 
seconds, specified an end time of '2012-12-12 12:12', the last time 
period it would export out is 2012-12-12 12:12:05".

Any feedback would be appreciated.

Thanks!

Ron