During testing of my app the frames per second -- shown either in the Xcode debug navigator or ARView .showStatistics -- sometimes drops by half and stays down there.
This low FPS will continue even when I kill the app completely and restart.
However, after giving my phone a break, the fps returns to 60 fps.
Does ARKit automatically throttle down FPS when the device gets too hot?
If so, is there a signal my program can catch from ARKit or the OS that can tell me this is happening?
Yes, this sounds like expected behavior. Since the device is hot and our phones don't have fans, the processor is not able to work optimally, leading to lower FPS. I'm not aware of any way to get the thermal/power state of your device, but others might know.
Thanks!
I'll probably use session(_:didUpdate:) to compute the fps (and maybe suggest to the user to give their device a break if there is a dramatic fps drop).
Yep, device itself will reduce CPU speed in high heat conditions, affecting overall device performance. You can check thermal state via NSProcessInfo https://developer.apple.com/documentation/foundation/nsprocessinfo/1417480-thermalstate
Yes, this sounds like expected behavior. Since the device is hot and our phones don't have fans, the processor is not able to work optimally, leading to lower FPS. I'm not aware of any way to get the thermal/power state of your device, but others might know.
Thanks!
I'll probably use session(_:didUpdate:) to compute the fps (and maybe suggest to the user to give their device a break if there is a dramatic fps drop).
Yep, device itself will reduce CPU speed in high heat conditions, affecting overall device performance. You can check thermal state via NSProcessInfo https://developer.apple.com/documentation/foundation/nsprocessinfo/1417480-thermalstate
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Todd2
Add a CommentBTW, I am running the iOS 15 beta (19A5340a), and I am using RealityKit.