},
		},
		"/cpu/classes/scavenge/assist:cpu-seconds": {
			deps: makeStatDepSet(cpuStatsDep),
			compute: func(in *statAggregate, out *metricValue) {
				out.kind = metricKindFloat64
				out.scalar = float64bits(nsToSec(in.cpuStats.ScavengeAssistTime))
			},
		},
		"/cpu/classes/scavenge/background:cpu-seconds": {
			deps: makeStatDepSet(cpuStatsDep),

const lockRankLeafRank lockRank = 1000

// lockNames gives the names associated with each of the above ranks.
var lockNames = []string{
	lockRankSysmon:          "sysmon",
	lockRankScavenge:        "scavenge",
	lockRankForcegc:         "forcegc",
	lockRankDefer:           "defer",
	lockRankSweepWaiters:    "sweepWaiters",
	lockRankAssistQueue:     "assistQueue",
	lockRankSweep:           "sweep",

		sysMap(unsafe.Pointer(need.base.addr()), need.size(), p.sysStat)
		sysUsed(unsafe.Pointer(need.base.addr()), need.size(), need.size())
		p.summaryMappedReady += need.size()
	}

	// Update the scavenge index.
	p.summaryMappedReady += p.scav.index.sysGrow(base, limit, p.sysStat)
}

// sysGrow increases the index's backing store in response to a heap growth.
//
// Returns the amount of memory added to sysStat.

	runtime.GC() call.

	harddecommit: setting harddecommit=1 causes memory that is returned to the OS to
	also have protections removed on it. This is the only mode of operation on Windows,
	but is helpful in debugging scavenger-related issues on other platforms. Currently,
	only supported on Linux.

	inittrace: setting inittrace=1 causes the runtime to emit a single line to standard

	limiterEventMarkAssist                             // Refers to mark assist (see gcAssistAlloc).
	limiterEventScavengeAssist                         // Refers to a scavenge assist (see allocSpan).
	limiterEventIdle                                   // Refers to time a P spent on the idle list.

	limiterEventBits = 3
)

	waitReasonGCAssistWait                            // "GC assist wait"
	waitReasonGCSweepWait                             // "GC sweep wait"
	waitReasonGCScavengeWait                          // "GC scavenge wait"
	waitReasonChanReceive                             // "chan receive"
	waitReasonChanSend                                // "chan send"
	waitReasonFinalizerWait                           // "finalizer wait"

				// Don't profile ourselves.
				continue
			}

			lock(&mp.threadLock)
			// Do not profile threads blocked on Notes,
			// this includes idle worker threads,
			// idle timer thread, idle heap scavenger, etc.
			if mp.thread == 0 || mp.profilehz == 0 || mp.blocked {
				unlock(&mp.threadLock)
				continue
			}
			// Acquire our own handle to the thread.
			var thread uintptr

			// https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=50094.
			if next := timeSleepUntil(); next < now {
				startm(nil, false, false)
			}
		}
		if scavenger.sysmonWake.Load() != 0 {
			// Kick the scavenger awake if someone requested it.
			scavenger.wake()
		}
		// retake P's blocked in syscalls
		// and preempt long running G's
		if retake(now) != 0 {
			idle = 0
		} else {
			idle++
		}

),this.blink_cpp_group_,this.api_group_,new RuntimeStatsGroup('GC-Background-Marking',/.*GC.MC.BACKGROUND.*MARKING.*/),new RuntimeStatsGroup('GC-Background-Sweeping',/.*GC.MC.BACKGROUND.*SWEEPING.*/),new RuntimeStatsGroup('GC-Background-Scavenger',/.*GC.SCAVENGER.BACKGROUND.*/),new RuntimeStatsGroup('GC-Background-MinorMC',/.*GC.MINOR_MC.BACKGROUND.*/),new RuntimeStatsGroup('GC-Background-MajorMC',/.*GC.MC.BACKGROUND.*/),new RuntimeStatsGroup('GC-Background-Other',/.*GC.*BACKGROUND.*/),new Runti...