I've been using remote probes almost a year and I just realized that it doesn't seem like they are buffering data when they lose the connection.
The article at this htttp:www.paessler.com/manuals/prtg8/remote_probes_and_multiple_probes.htm states the following:
"During a connection loss a buffer stores a maximum of 500,000 sensor results in RAM memory of the remote probe system (up to 50 - 200 MB). This means that for 100 sensors with one minute interval the monitoring results of up to 3 days can be buffered (or 52 minutes for 10,000 sensors with one minute interval)."
If that were really the case then I would very rarely have gaps in my monitoring data. My remote probes typically have fewer than 100 sensors and don't have anything scanning faster than 5 minute intervals and yet if I look at the graphs and tables I can see plenty of short gaps in coverage of just a few minutes or hours. It appears that no buffering is done at all.
Unfortunately I don't see a way to attach pictures but I'd be glad to attach examples of what I'm talking about. The typical case would be that I see a gap in the green displayed on the Probe Health sensor and if I look at various sensors in the probe during that time, they don't have any data.
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No, and I'm not talking about one instance on one remote probe. I have dozens of remote probes and many of them have intermittent network connectivity that would make buffering the data a valuable feature. Unfortunately I do not think I can share the log files.
Nov, 2012 - Permalink
I'm afraid without the log files we wouldn't be able to discern what exactly is / was the issue.
Nov, 2012 - Permalink
Did the probe in case restart while disconnected? If so, this would explain the data loss, seeing as this would clear the RAM, as such losing the stored monitoring data. Feel free to send an email to support@paessler.com, refering to this thread and including your core and probe log files for analysis.
Nov, 2012 - Permalink