process-hang-diagnosis

To diagnose a Linux process stuck in an uninterruptible D-state, this skill correlates kernel-level wait channels with user-space thread execution states via non-intrusive introspection. It pinpoints whether the hang stems from resource contention or deep kernel blocking.

Troubleshooting a production deadlock requires correlating kernel states with internal execution paths to identify ABBA deadlocks or futex waits. Automated branching selects the correct diagnostic path based on initial baseline data to pinpoint the exact blocking mechanism.

To find the root cause of a process blocked by file lock contention, apply automated diagnostic branching to correlate OS-level kernel states with process-level execution paths. This confirms the specific lock contention blocking the thread.

Yes, you need ptrace capabilities and procfs access to analyze unresponsive Linux process stack traces. These permissions enable non-intrusive process introspection, allowing the dual-track analysis to correlate kernel wait channels with user-space thread states.

A production service stops responding to requests without high CPU usage due to deadlocks, network socket blocking, or waiting on futexes. Diagnosing this requires correlating kernel wait channels with user-space thread execution states to identify the exact resource bottleneck.