What's the maximum number of virtual processor cores available in AWS Lambda?

Question

I\'m trying to find the maximum number of virtual processor cores available in AWS Lambda. The official documentation implies that it scales with the amount of configured me

Answer 1

As per AWS Lambda documentation and forum, AWS doesn't state which instance types that AWS uses for this service. In the end of 2014, AWS used compute-optimize-like instances. And now, AWS uses general-purposes-like instances.

The CPU share dedicated to a function is based off of the fraction of its allocated memory, per each of the two cores. For example, an instance with ~ 3 GB memory available for lambda functions where each function can have up to 1 GB memory means at most you can utilize ~ 1/3 * 2 cores = 2/3 of the CPU. The details may be revisited in the future, but that is the fractional nature of our usage model.

You can only utilize the CPU power proportional to the memory. Although, the lower and higher memory are in a same instance, they will share proportional CPU power, which is the higher memory will get more CPU power. If you read your total CPU cores is 2, it doesn't mean that you can fully utilize all of the CPU.

Currently, there is no way to configure CPU. Only total memory that you can adjust.