ki2k

I've observed same issue after upgrading to Unraid 6.12.2 today. I'm also following https://forums.unraid.net/topic/141105-unable-to-connect-to-webui-ssh-works-diagnostics-hangs/ and https://forums.unraid.net/bug-reports/stable-releases/612-unraid-webui-stop-responding-then-nginx-crash-r2451/.

"perf" would be very helpful to help determine bottlenecks and performance issues. https://slackbuilds.org/repository/14.2/development/perf/ perf is a userspace interface to the kernel's perf events. Performance counters are CPU hardware registers that count hardware events such as instructions executed, cache-misses suffered, or branches mispredicted. They form a basis for profiling applications to trace dynamic control flow and identify hotspots.