If I execute the following commands:
rrdtool create test1.rrd --start 999999000 DS:val:GAUGE:200000:U:U
RRA:AVERAGE:0.5:1:2
rrdtool update test1.rrd 999999300:50
rrdtool update test1.rrd 999999600:100
rrdtool fetch test1.rrd AVERAGE --start 999999000 --end 999999600
The output will be:
val
999999300: 5.0000000000e+01
999999600: 1.0000000000e+02
999999900: nan
As far as I understand the output above is correct.
However, if I change the start timestamps to 1000000000 or greater, i.e.
rrdtool create test1.rrd --start 1000000000 DS:val:GAUGE:200000:U:U
RRA:AVERAGE:0.5:1:2
rrdtool update test1.rrd 1000000300:50
rrdtool update test1.rrd 1000000600:100
rrdtool fetch test1.rrd AVERAGE --start 1000000000 --end 1000000600
The output will be:
val
1000000200: 5.0000000000e+01
1000000500: 8.3333333333e+01
1000000800: nan
The first timestamp in the output is not (start + 300) as is the case with the
first output.
More importantly, the values stored in the database are different than in the
first example.
Any help would be greatly appreciated.
Thanks,
Pentti
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