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Re:Twitter migrates data to Google Cloud by _msw_ on Wednesday January 23, 2019 @12:23PM (#18980272)
Hi! I'm from the EC2 team.

This is a great tool to help uncover if CPU and memory NUMA within a VM aligns to the physical host or not:

https://www.cl.cam.ac.uk/research/srg/netos/projects/ipc-ben...

Paper from the USENIX 2012 conference: http://anil.recoil.org/papers/drafts/2012-usenix-ipc-draft1....

EC2 instances have been NUMA optimized since we launched our CC1 instances in 2010. I encourage you to try ipc-bench on your cloud provider of choice, if CPU and NUMA affinity is important to your workload.

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