Resolve Unix FUTEX CPU Hang

Image of trace attached. My production-grade Unix box, whose sole job is to run MySQL databases, keeps locking up under a flood of FUTEX_WAKE_PRIVATE calls. A single process goes into a tight mutex spin, steals 100 % CPU, and eventually stalls the entire instance. A reboot helps only briefly, so I need a deeper fix, not a band-aid.

You’ll start with full SSH access (root if required) to the affected machine plus a staging clone for any potentially disruptive tests. I’ve already captured some strace logs that show the FUTEX loops, but I’m open to fresh diagnostics—perf, gdb, eBPF probes, whatever you trust. Once the culprit is located, I expect a clean resolution, whether that means patching glibc, adjusting kernel parameters, upgrading a driver, or refactoring the MySQL startup scripts.

Deliverables
• Root-cause report explaining why the futex lockup occurs
• The applied fix or configuration change, documented step-by-step
• Confirmation that MySQL resumes normal performance under sustained load (I’ll supply the stress workload)

If you’ve wrestled with futex storms, mutex contention, or similar low-level threading issues on Unix before, I’d like your help right away.