Thanks for confirming. The specified frequency is indeed well respected. When there is no data-missing, the interval shift rarely exceed 14s, small compared to 240s the scheduled interval. What intrigues me is that the exact phase/timing is as well kept after power cut and reboot. By the way, can a measurement be as well skipped, as designed behaviour, due to scheduling issues mentioned by @Cristel? Thanks, wenqin
On 02 Sep 2016, at 11:45, Robert Kisteleki <robert@ripe.net> wrote:
2. As observed by @Robert, most ‘abnormal’ interval is actually very close to integer times of planned value. If I get your message right, you are indicating that planned measurements can be skipped for the reasons you mentioned and shall kick-off again following the previous timing, even after rebooting?
Kind of. There's a reasonable expectation that probes will measure with the specified frequency, but reality is that for various reasons you'll not see all the results all the time.
Regards, Robert