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

Stimpson, John 1 Reputation point
2024-11-19T15:52:40.0466667+00:00

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.

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Azure IoT Edge
Azure IoT Edge
An Azure service that is used to deploy cloud workloads to run on internet of things (IoT) edge devices via standard containers.
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Azure IoT Hub
Azure IoT Hub
An Azure service that enables bidirectional communication between internet of things (IoT) devices and applications.
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  1. Sander van de Velde | MVP 33,956 Reputation points MVP
    2024-11-19T20:06:32.0066667+00:00

    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.

    If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.

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