I've been wondering if the ARM version of AWS Lambda is still running on Graviton2 because the info I found suggests that it is still from 2019. I might have missed some new announcements or maybe the documentation hasn't been updated. Does anyone have the latest info about which version is currently in use and any timeline for potential upgrades?
4 Answers
I'm not sure it really matters in the grand scheme of things. What you pay for with Lambda is based on memory and execution time, and they could mix and match CPUs however they want. The beauty of serverless is you don't have to worry about the infrastructure, right? Too many choices can be overwhelming, honestly.
Actually, it does matter for performance. Graviton2 has significantly lower performance compared to newer generations. We've found that using ARM for most of our Fargate tasks just isn't feasible because of this. Fargate did add Graviton3, but it’s a gamble whether you’ll get it or not.
From what I last checked, Lambda's ARM instances are still using Graviton2. AWS hasn't been very transparent about it, and the documentation still points to Graviton2. I imagine there are different constraints for Lambda compared to EC2, which might explain the slower upgrade timeline.
There’s no real rush for AWS to upgrade since they charge for execution time. Slower CPUs can be more profitable for them, so it’s in their interest to keep using older hardware.
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