I wrote an article to discuss about data movement latency between AG groups: Troubleshooting data movement latency between synchronous-commit AlwaysOn Availability Groups Now I develop a tool to analyze AG log block movement latency between replicas and create report accordingly. You can download it here: https://github.com/suyouquan/AGLatency/releases/download/V1.0/AGLatencyV1.01.zip Video: https://github.com/suyouquan/AGLatency/blob/master/AGLatency.mp4 You capture log block Xevent trace from both primary...

https://blogs.msdn.microsoft.com/psssql/2018/09/08/aglatency-report-tool-introduction/