now := nanotime()
	work.tSweepTerm = now
	var stw worldStop
	systemstack(func() {
		stw = stopTheWorldWithSema(stwGCSweepTerm)
	})

	// Accumulate fine-grained stopping time.
	work.cpuStats.accumulateGCPauseTime(stw.stoppingCPUTime, 1)

	// Finish sweep before we start concurrent scan.
	systemstack(func() {
		finishsweep_m()
	})

	// clearpools before we start the GC. If we wait the memory will not be

}

// accumulateGCPauseTime add dt*stwProcs to the GC CPU pause time stats. dt should be
// the actual time spent paused, for orthogonality. maxProcs should be GOMAXPROCS,
// not work.stwprocs, since this number must be comparable to a total time computed
// from GOMAXPROCS.
func (s *cpuStats) accumulateGCPauseTime(dt int64, maxProcs int32) {
	cpu := dt * int64(maxProcs)