AWS SDK Secure Tunneling causing an individual core to persistently stay at 100%

[kdaviscellect]

Describe the bug

In an IPC, we are seeing that the CPU usage of the SDK script is causing 100% usage of a particular core. This appears to be a similar issue to what was seen in the device client here: awslabs/aws-iot-device-client#147

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

CPU usage is very low

Current Behavior

CPU usage is at 100%

Reproduction Steps

We run the attached script as a service within the IPC which is based on AWS documentation.

secure_tunneling.txt

Possible Solution

No response

Additional Information/Context

No response

SDK version used

1.5.4

Environment details (OS name and version, etc.)

Ubuntu 22.04

[bretambrose]

Your repro doesn't use Greengrass IPC. In fact it doesn't use the v2 SDK which is the repo this issue is created on.

It does however include:

while True:
    continue

[JosepTeruel]

We are currently using the v2 SDK and have chosen not to utilize Greengrass IPC as we don’t require offline communication between IPCs. We are using AWS IoT Core Things

Are there specific scenarios where Greengrass might offer better advantages? Our primary focus is ensuring secure tunneling within our IPC setup.

Also, we removed the infinite loop.