Hello Tomass Janis Bross,

Could you help me with this problem,
I would like to know if you managed to analyze

Best Regards

Hello Rodrigo!

This, to me, seems like it is not an issue, but is working as expected. If you have configured to keep 7 days of history, then if you try to show data older than 7 days in the graph, it will show trends.
One test that I am interested in - What if you were to show last 6 days and 23 hours in the graph ? It should show history data.

Cheers,
Tom

Hello Dear Tom,

Thanks for the reply, I am sending you the 6 day and 6 day and 23 hour charts the chart is generated as trends.

As previously informed, if I select a period close to 7 days ago and the graph is generated as history, see the image (graph 3 days history.jpg).

below graphs:

6 days

6 dias and 23 horas

Hello Dear Tom,

Please managed to analyze the charts, see the chart with 6 days is like trends.
I believe it is a bug yes.

Can you help me?

Best Regards

Hello Rodrigo!
Sorry for the delay.

I've been talking with our developer team and we have come to a conclusion that this is not a bug, it is working as intended.This code is responsible for determining whether the graph is going to use trend data or history data. The logic of the code is as follows:

• use history data if item trend data is set to 0 (not set on item or global level)
• OR
  • current timestamp $time_now minus item history period (global or item level) is less than requested $from_time
  • and requested period divided by desired width of graph in pixels is less or equal to (ZBX_MAX_TREND_DIFF / ZBX_GRAPH_MAX_SKIP_CELL)

Essentially it chooses trend data after 2 days because of the pixel amount on your screen.

If you wish to look at longer periods of history data, you can do that by creating a widget "Graph" on your dashboard, and under the section "Displaying options" setting the parameter "History data selection" to "history".

 
Be careful with this though, as it will create quite heavy queries on the database.

Closing this issue.
Cheers,
Tom