Migrating the Jira and Confluence applications to AWS Graviton

This post details the successful migration of over 3000 EC2 instances for Jira and Confluence to AWS Graviton, specifically Graviton4. It highlights the technical challenges faced, including CPU cache L3 miss-prediction and JVM optimization for Arm architecture. The migration employed a refined testing methodology focusing on 'Throughput at breaking latency' and the use of CPU Performance Monitoring Units (PMU) to gather low-level hardware metrics. The outcomes include improved performance, reliability, and cost efficiency.