Forum Discussion
Multiple problems with live tiles and streaming data
Super UserIs this a "pure" streaming dataset or a hybrid one?
There is some ominous language here https://docs.microsoft.com/en-us/power-bi/connect-data/service-real-time-streaming
like " if a request exceeds the 15Kb size restriction " and "streaming tiles will fail to render" that might be related to your issue.
You may need to look at other BI tools that are more suited for high speed streams (like Splunk).
This is a hybrid data set.
You are right that that the language is ominous, but not clear. What does it mean to temporarily fail? In my case, one card works always, and the other two never work. The chart works, but only one trace renders at full resolution.
I am not willing to give up on Power BI quite yet. I do not think that data rate is the issue here...
I tried clearing all the data from the dataset by disabling and the re-enabling historic data analysis. I then changed the data source to generate data at 1 value per second for Pv and Mv, leaving Sp at one value per 5 seconds. That results in a payload of 1KB every 5 seconds, well below the ominous 15KB threshold. The dashboard behaviour does not change:
* The Pv card updates normally
* The Sp and Mv cards are both blank, and never update
* The Pv trace on the chart renders at full resolution, about 300 values in a 5-minute window
* The Mv trace renders at a much reduced resolution, about 10 values where it should be 300
* The Sp trace sometimes renders, but only 2 or 3 values when it does. It should render 60 points in a 5-minute window.
After more playing around, I can add this information:
Only 1 of the 3 cards shows a value at any one time, but the card showing a value changes from time to time. Most of the time there is a value in the Pv card, but sometimes Mv and Sp can get a value. If any card gets a value the other two cards go blank.
If I pin a chart visual from a report to my dashboard, that visual updates properly. All of the traces appear to be rendered at the full data resolution. Adding this visual to a dashboard containing the 3 cards and one live chart does not change the behaviour of the cards and chart at all. They continue to glitch as described earlier.
