[rrd-users] last average is NaN?

[nate]

Levente Kovacs wrote:
> My only question is why is that so that the last average is allways "NaN"?

It seems because that last value is in the future(the next value(s) to
be updated).

[cacti at dc1-mon002:~/public_html/cacti/rra/dc1-mon002]$ rrdtool fetch
linux-basics.rrd AVERAGE|tail -n 2; date
1231788600: 0.0000000000e+00 0.0000000000e+00 4.0950000000e+03
3.2049810000e+04 2.3050000000e+03 1.3810100000e+06 1.8600000000e+02
6.3300000000e+02 1.49933 3333e+00 1.4778333333e+00 1.2953333333e+00
3.1000000000e-01 3.3100000000e+00 0.0000000000e+00 1.1200000000e+01
1.4945000000e+04 1.6055000000e+04 5.60873028 9e+05 5.2442588333e+05
0.0000000000e+00 0.0000000000e+00
1231788660: nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan
nan nan nan nan nan
Mon Jan 12 11:30:51 PST 2009
[cacti at dc1-mon002:~/public_html/cacti/rra/dc1-mon002]$ ~/bin/timeconv
1231788660
Localtime:Mon Jan 12 11:31:00 2009
Parsed:481235460
[cacti at dc1-mon002:~/public_html/cacti/rra/dc1-mon002]$