const runtime.gcGoalUtilization

3 uses

	runtime (current package)
		mgc.go#L639: 	triggerError := goalGrowthRatio - memstats.triggerRatio - utilization/gcGoalUtilization*(actualGrowthRatio-memstats.triggerRatio)
		mgc.go#L656: 		u_g := gcGoalUtilization
		mgc.go#L977: const gcGoalUtilization = 0.30