ohos-issue-graphics-sysfreeze-analysis

What problem does it solve?

This Skill helps you analyze OpenHarmony graphics-related sysfreeze/appfreeze logs to identify why the process freezes and which threads are blocking, including IPC deadlock and task-queue blocking scenarios.

Core Features & Use Cases

• Freeze type triage: Confirms whether the event is SERVICE_BLOCK or THREAD_BLOCK (e.g., THREAD_BLOCK_6S) and interprets what those signals imply.
• Blocking chain reconstruction: Uses two DFX captures to trace from the initial blocked thread (Tid) through locks/semaphores/condition waits and IPC relationships, until a non-blocked final blocker is found.
• Timeline + task queue correlation: Validates time gaps between watchdog captures and inspects task queues (VIP/Immediate/High/Low/Idle) to connect blocking behavior with the scheduled workload.
• Resource-aware guidance: Incorporates system state signals like ReclaimAvailBuffer and ThermalLevel to avoid misattributing freezes to only application logic.

Quick Start

Ask the AI to analyze the attached sysfreeze/appfreeze log set for OpenHarmony graphics using the provided lib.unstripped symbols to produce the blocking chain path and root cause.