[SOLVED] New Dashboard cards issue

[JasMan]

I've issues with the new dashboard cards in 24.7.

The traffic graph is not continuosly. It shows empty parts for 2-3 seconds at the end.
The CPU graph is completly empty.

I tried different browsers and users. Same issues.

I run a test version of OPNsense in Hyper-V, and the graphs are fine there.

Any ideas?

[furfix]

Not sure if this is your case, but I noticed the dashboard is not drawing anything if it lost the focus after some time. So, if you alt+tabbed for some time, then the graph will stop drawing the lines...I assume to save resources.

Not sure if that's the expected behaviour, but sharing it with you to see if it could be your case.

[JasMan]

Thank you for sharing.
I noticed the same when the tab with the gui goes to the background.

But my issues happen right after I've logged in and the tab has the focus.

[geekguy]

I am having flickering and it drives me nuts. I'd rather not have the dashboards timeout, just have them update continously in the background and maintain the session state properly. Each time I move away from the tab for a while, I come back and my dashboard is just flickering like crazy on FireFox and I have to refresh the page to get it to work. Maybe an in-focus automatic refresh is needed?

[JasMan]

@geekguy: Try to delete the browser cache for the site. I can remember that it helped in the past.

[JasMan]

I've found out that the issue is caused by Nginx.

Nginx provides the OPNsense GUI for external and internal access. When I open the GUI directly all graphs/cards are fine.

Not sure if it is an configuration or plugin issue.

Does anybody use Nginx in combination with OPNsense? 

[JasMan]

I was able to solve it.

Nginx was configured to buffer the responses from the upstream server. Therefore, the interfaces and CPU load values for the widgets where send only when the buffer size has been reached.
This caused the 3-second-delay for the interface values, and a 30-second-delay for the CPU load values which was too long for the graph to show anything.

I've disabled "Response Buffering" in the location settings in Nginx.