I'm having an issue with the Power Chart whereby it takes ~30-35 seconds to make the data viewable. It doesn't seem to matter whether it is realtime/historical, 1 pen/10 pens, historian or transaction group, a full view/popup.
The queries themselves are only taking a couple of seconds at the most to execute for larger datasets, and the query doesn't run until near the end of the wait time.
Tested on different browsers, machines and VM's, consistent results.
I have even tried setting up a new view with a Power Chart, adding a single pen and the issue persists. It seems as though something is 'hanging' but I just don't know where to go from here, any ideas please?
I've seen similar pathological stalls with the PowerChart (and the XY Chart) where data is retrieved from a source in milliseconds, assigned to the chart props, and the chart struggles to paint in many seconds.
Resolved by switching to Apex charts (now Embr charts). Sorry.
I have tried the simplest forms of building the charts with the same results: fresh chart, add single pen from tag browser (tried both historian and from a transaction group) and set to realtime.
Not the answer I had hoped for but an avenue to explore, thanks for your response.
I was hoping that 8.3 would bring with it better trending/charting features as the Power Chart has always been lacking; it's a vital component of any SCADA system.
I have noticed a similar issue on a gateway with about 60k tags trended and using the internal core historian. Not sure how big your system is or if you are using the core historian. But if you are and based on the commentary on the form it appears core historian is not performant for this size. Switching to SQL historian solved this issue for me.
