I am getting IoT hub Throttling issues on a S2 hub servicing 480 IoT edge gateways.

Question

IoT edge runtime trying to communicate every 15 seconds. I am getting IoT hub throttling errors for the 480 IoT edge devices that I have deployed.

Our environment has not changed since June so did something change on Microsoft's side.

Answer 1

Hello @Stimpson, John,

welcome to this moderated Azure community forum.

Looking at the documentation, you could reach the limits of your S2:

B2 and S2: Device-to-cloud sends: 120 send operations/sec/unit

I expect these are 4KB chunks and you send at least 480*6=2880 chunks.

Try to scale up with more units if possible.

I also recommend researching the routes towards the cloud ($upstream on the local routes).

You could always open a support ticket so the IoT hub backend is investigated.

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