[rrd-users] Questions of new user

[Pavel Rubtsov]

  кто: Sun, 6 Dec 2009 16:25:10 +0000
когда: Simon Hobson <linux at thehobsons.co.uk>

> >Result:
> >1260111600: nan
> >1260115200: 4.1111111111e+01
> >1260118800: nan
> >
> >But (10+20+...+50+40)/12 = 48,3! Why?
> 
> You have your periods wrong - your first completed consolidation 
> period is at 1260115200 (Sun  6 Dec 2009 16:00:00 GMT) and started at 
> 1260111600 (Sun  6 Dec 2009 15:00:00 GMT). 

Hm... Ok, but:

01. 1260111600 Start period
02. 1260111900
03. 1260112200
04. 1260112500
05. 1260112800
06. 1260113100
07. 1260113400
08. 1260113700
09. 1260114000
10. 1260114300
11. 1260114600
12. 1260114900
?? 13. 1260115200 End period?

Why 13 steps? 
I was
>RRA:AVERAGE:0.5:12:1


Thanks for explanation!

-- 
Pavel Rubtsov <qweion at gmail.com>
Paused: Pavliga - Stop (2006 Edit)