Problem on flapping

[xdatanet]

Yesterday I have experimented a strange behaviour.
An host went down and up several times due a network problem and it went in flapping state. After a flapping stop I have found on graph that the next flapping start occurred after 12 minutes the critical state... at 18.32. Shouldn't I expect a critical??
I check the host every 5 minute and 5 times by 1 minutes after a critical.

Why this behaviour?

Regards.

<!-- 2018-12-04 18:20:00 CET / 1543944000 --> <row><v> 2.6285333333e+01 </v><v> 3.4133333333e+01 </v></row>
<!-- 2018-12-04 18:21:00 CET / 1543944060 --> <row><v> 2.6285333333e+01 </v><v> 3.4133333333e+01 </v></row>
<!-- 2018-12-04 18:22:00 CET / 1543944120 --> <row><v> 2.6285333333e+01 </v><v> 3.4133333333e+01 </v></row>
<!-- 2018-12-04 18:23:00 CET / 1543944180 --> <row><v> 5.3949466667e+02 </v><v> -1.5466666667e+01 </v></row>
<!-- 2018-12-04 18:24:00 CET / 1543944240 --> <row><v> 5.3949466667e+02 </v><v> -1.5466666667e+01 </v></row>
<!-- 2018-12-04 18:25:00 CET / 1543944300 --> <row><v> 5.3949466667e+02 </v><v> -1.5466666667e+01 </v></row>
<!-- 2018-12-04 18:26:00 CET / 1543944360 --> <row><v> 5.3949466667e+02 </v><v> -1.5466666667e+01 </v></row>
<!-- 2018-12-04 18:27:00 CET / 1543944420 --> <row><v> 5.3949466667e+02 </v><v> -1.5466666667e+01 </v></row>
<!-- 2018-12-04 18:28:00 CET / 1543944480 --> <row><v> 4.2733333333e+02 </v><v> -3.3333333333e+00 </v></row>
<!-- 2018-12-04 18:29:00 CET / 1543944540 --> <row><v> 6.1342266667e+02 </v><v> -2.3266666667e+01 </v></row>
<!-- 2018-12-04 18:30:00 CET / 1543944600 --> <row><v> 6.1342266667e+02 </v><v> -2.3266666667e+01 </v></row>
<!-- 2018-12-04 18:31:00 CET / 1543944660 --> <row><v> 6.1342266667e+02 </v><v> -2.3266666667e+01 </v></row>
<!-- 2018-12-04 18:32:00 CET / 1543944720 --> <row><v> 6.1342266667e+02 </v><v> -2.3266666667e+01 </v></row>
<!-- 2018-12-04 18:33:00 CET / 1543944780 --> <row><v> 6.1342266667e+02 </v><v> -2.3266666667e+01 </v></row>
<!-- 2018-12-04 18:34:00 CET / 1543944840 --> <row><v> 3.6437000000e+01 </v><v> -4.1666666667e-01 </v></row>
<!-- 2018-12-04 18:35:00 CET / 1543944900 --> <row><v> 3.6437000000e+01 </v><v> -4.1666666667e-01 </v></row>
<!-- 2018-12-04 18:36:00 CET / 1543944960 --> <row><v> 3.6437000000e+01 </v><v> -4.1666666667e-01 </v></row>
<!-- 2018-12-04 18:37:00 CET / 1543945020 --> <row><v> 3.6437000000e+01 </v><v> -4.1666666667e-01 </v></row>
<!-- 2018-12-04 18:38:00 CET / 1543945080 --> <row><v> 3.6437000000e+01 </v><v> -4.1666666667e-01 </v></row>

Why does Nagios perform a new check after 5 minutes of that of 18:23??

[scottwilkerson]

What you are looking at is the RRD data, and it creates averages of the results it sees for every minute, not just when the service is actually checked.