How to increase stacksize?

[evbo]

If I create a .cargo folder in my project root and place in it config.toml with:

[build]
rustflags = [
    "-C", "link-arg=-zstack-size=104857600"
]

Will the lambda execute my Rust program with 10MB of stacksize?

[greenwoodcm]

No, the compile flags are totally unrelated to the configured memory of the Lambda function. To configure the memory your function gets, use the following parameter:

https://docs.aws.amazon.com/lambda/latest/api/API_CreateFunction.html#lambda-CreateFunction-request-MemorySize

[evbo]

Thanks but my question wasn't asking how to provision more memory resource. I'm asking how to increase the stacksize of the Rust program while executing in the lambda.

[greenwoodcm]

oh, sorry, i totally misinterpreted your question (obviously). that's a really good question. i actually don't know. i don't know of a reason that would prevent the stack size from being respected. could be worth a test.