What would you like to be added?

Now that QueueingHint is GA (#131973), I'd like to work on a QHint implementation for my plugins, but before I do so, the following improvements could be made. What do you think?

I'd like to propose operational improvements:

• Metrics to measure hint effectiveness
  queueing_hint_decisions_total{plugin="...", event="...", hint="Queue|QueueSkip"}
  I'm considering whether to include scheduling outcomes:
  queueing_hint_effectiveness_total{plugin="...", event="...", hint="Queue", outcome="scheduled|failed"}

• Configuration to disable hints per plugin

  profiles:
  - schedulerName: default-scheduler
    disabledQueueingHints: ["NodeResourcesFit"]

Why is this needed?

• Metrics: Identify which plugins provide accurate hints
• Control: Disable hints for problematic plugins without code changes
• Debugging: Isolate issues to specific plugins

Open Questions

Should we track scheduling outcomes to measure false positives (Queue→failed) and false negatives (QueueSkip→could have succeeded)?

/sig-scheduling

cc: @sanposhiho @macsko 🙏