n0derunner

Cross rack network latency in AWS

Published: (Updated: ) in Workloads & Benchmarks, , by . 1 Comment on Cross rack network latency in AWS.

I have VMs running on bare-metal instances. Each bare-metal instance is in a separate rack by design (for fault tolerance). The bandwidth is 25GbE however, the response time between the hosts is so high that I need multiple streams to consume that bandwidth. Compared to my local on-prem lab I need many more streams to […]