const runtime.traceEvGCSweepBegin

2 uses

	runtime (current package)
		traceevent.go#L68: 	traceEvGCSweepBegin       // GC sweep start [timestamp, stack ID]
		traceruntime.go#L383: 			tl.eventWriter(traceGoRunning, traceProcRunning).event(traceEvGCSweepBegin, tl.stack(1))

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)