gistfile1.txt

(pprof) top
Showing nodes accounting for 42.46s, 56.69% of 74.90s total
Dropped 1318 nodes (cum <= 0.37s)
Showing top 10 nodes out of 258
      flat  flat%   sum%        cum   cum%
    20.63s 27.54% 27.54%     20.83s 27.81%  runtime.adjusttimers
     4.59s  6.13% 33.67%      4.73s  6.32%  runtime.timeSleepUntil
     4.22s  5.63% 39.31%      4.44s  5.93%  syscall.Syscall
     3.11s  4.15% 43.46%      4.85s  6.48%  math/big.nat.divBasic
     2.65s  3.54% 47.00%      6.39s  8.53%  runtime.scanobject
     2.51s  3.35% 50.35%      2.65s  3.54%  runtime.findObject
     1.36s  1.82% 52.16%     12.23s 16.33%  runtime.mallocgc
     1.16s  1.55% 53.71%      1.16s  1.55%  runtime.osyield
     1.15s  1.54% 55.25%      1.15s  1.54%  runtime.memclrNoHeapPointers
     1.08s  1.44% 56.69%      1.08s  1.44%  math/big.addMulVVW
(pprof) list runtime.adjusttimers
Total: 1.25mins
ROUTINE ======================== runtime.adjusttimers in runtime/time.go
    20.63s     20.83s (flat, cum) 27.81% of Total
         .          .    647:		}
         .          .    648:		return
         .          .    649:	}
         .          .    650:	var moved []*timer
         .          .    651:loop:
     380ms      380ms    652:	for i := 0; i < len(pp.timers); i++ {
     140ms      140ms    653:		t := pp.timers[i]
    14.59s     14.59s    654:		if t.pp.ptr() != pp {
         .          .    655:			throw("adjusttimers: bad p")
         .          .    656:		}
     5.23s      5.23s    657:		switch s := atomic.Load(&t.status); s {
         .          .    658:		case timerDeleted:
         .          .    659:			if atomic.Cas(&t.status, s, timerRemoving) {
         .          .    660:				dodeltimer(pp, i)
         .          .    661:				if !atomic.Cas(&t.status, timerRemoving, timerRemoved) {
         .          .    662:					badTimer()
         .          .    663:				}
         .          .    664:				atomic.Xadd(&pp.deletedTimers, -1)
         .          .    665:				// Look at this heap position again.
         .          .    666:				i--
         .          .    667:			}
         .          .    668:		case timerModifiedEarlier, timerModifiedLater:
         .          .    669:			if atomic.Cas(&t.status, s, timerMoving) {
         .          .    670:				// Now we can change the when field.
         .          .    671:				t.when = t.nextwhen
         .          .    672:				// Take t off the heap, and hold onto it.
         .          .    673:				// We don't add it back yet because the
         .          .    674:				// heap manipulation could cause our
         .          .    675:				// loop to skip some other timer.
         .       90ms    676:				dodeltimer(pp, i)
     220ms      310ms    677:				moved = append(moved, t)
      10ms       10ms    678:				if s == timerModifiedEarlier {
         .          .    679:					if n := atomic.Xadd(&pp.adjustTimers, -1); int32(n) <= 0 {
         .          .    680:						break loop
         .          .    681:					}
         .          .    682:				}
         .          .    683:				// Look at this heap position again.
         .          .    684:				i--
         .          .    685:			}
      60ms       60ms    686:		case timerNoStatus, timerRunning, timerRemoving, timerRemoved, timerMoving:
         .          .    687:			badTimer()
         .          .    688:		case timerWaiting:
         .          .    689:			// OK, nothing to do.
         .          .    690:		case timerModifying:
         .          .    691:			// Check again after modification is complete.
         .          .    692:			osyield()
         .          .    693:			i--
         .          .    694:		default:
         .          .    695:			badTimer()
         .          .    696:		}
         .          .    697:	}
         .          .    698:
         .          .    699:	if len(moved) > 0 {
         .       20ms    700:		addAdjustedTimers(pp, moved)
         .          .    701:	}
         .          .    702:
         .          .    703:	if verifyTimers {
         .          .    704:		verifyTimerHeap(pp)
         .          .    705:	}
(pprof)