1755022 - GC slice with 6ms budget went for 61.9ms (sweeping, waiting for parallel tasks)

Status: NEW

(Core :: JavaScript: GC, defect, P2)

Description

[Steve Fink [:sfink] [:s:]]

A profile from bug 1754562 has the pause mentioned in the title.

Comment 1

[Steve Fink [:sfink] [:s:]]

{
  "start": 591295.399359,
  "end": 591357.339267,
  "name": "GCSlice",
  "category": 5,
  "data": {
    "type": "GCSlice",
    "timings": {
      "slice": 54,
      "pause": 61.939,
      "reason": "INTER_SLICE_GC",
      "initial_state": "Sweep",
      "final_state": "Sweep",
      "budget": "interruptible 6ms (idle)",
      "major_gc_number": 39,
      "start_timestamp": 591.295,
      "phase_times": {
        "sweep": 61918,
        "sweep.sweep_mark": 3668,
        "sweep.sweep_mark.sweep_mark_weak": 80,
        "sweep.sweep_mark.sweep_mark_gray": 3586,
        "sweep.finalize_start": 349,
        "sweep.finalize_start.weak_zones_callback": 0,
        "sweep.finalize_start.weak_compartment_callback": 345,
        "sweep.sweep_compartments": 57862,
        "sweep.sweep_compartments.sweep_discard_code": 760,
        "sweep.sweep_compartments.sweep_finalization_registries": 15,
        "sweep.sweep_compartments.sweep_jit_data": 2530,
        "sweep.sweep_compartments.sweep_misc": 3,
        "sweep.sweep_compartments.join_parallel_tasks": 54421,
        "sweep.finalize_object": 0,
        "sweep.finalize_non_object": 0
      }
    }
  }
}