Pavel Rubtsov wrote: >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?
It isn't 13, it's 12 ! 12. 1260111600 End of previous consolidated period. 01. 1260111900 02. 1260112200 03. 1260112500 04. 1260112800 05. 1260113100 06. 1260113400 07. 1260113700 08. 1260114000 09. 1260114300 10. 1260114600 11. 1260114900 12. 1260115200 End period At each timestamp, you have the value for the previous interval - rrdtool only talks about history, it never tries to predict the future. So when you do the update for 1260115200, that supplies data for the period starting at 1260114900 and ending at 1260115200, and that in turn gives the data required to consolidate for the period starting at 1260111600 and ending at 1260115200. I agree, it can take a little while to get your head round these details. The key to remember is that rrdtool only ever deals with rates over periods, and each timestamp in the output relates to the END of a period. -- Simon Hobson Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed author Gladys Hobson. Novels - poetry - short stories - ideal as Christmas stocking fillers. Some available as e-books. _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
