We have a external process that sends periodics values to zabbix, using the zabbix_sender.

One of the data is a latency from a given request to be completed. But this request doesn`t happens all the time, is possible to have more than a hour without the request.

When sending the data only when last time slice had a request, the graph is "ugly".

When we send a padding zero, the graph is better, but the statistics (avg, min and max) form the graph are unreal.

We would like to send a padding value (a "NaN"), or display the simple graph using some king of small bars or sticks.