[atlas] Actual measurement interval much larger than planned

Hi Cristel, hi Robert,

Thanks a lot for your feedback.

1. @Cristel, yes, you’re right, I’m aware of this scheduling issue. Indeed, a big part of such ‘abnormal’ intervals is reasonably ‘short’, 55% are between 2 and 4 planned value, among 510 cases seen in 1074 probes traces over a week’s time. 

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?

Again many thanks.

Regards,
wenqin

> On 02 Sep 2016, at 09:53, Robert Kisteleki <robert at ripe.net> wrote:
> 
> 479 is almost exactly twice the frequency (240), so it's basically one
> result skipped. Most likely the probe just didn't execute that measurement
> (was powered down? rebooting? was refreshing its set of tasks just at the
> worst time?)

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