gcStats := debug.GCStats{
		// If stats.PauseQuantiles is non-empty, ReadGCStats fills
		// it with quantiles summarizing the distribution of pause time.
		// For example, if len(stats.PauseQuantiles) is 5, it will be
		// filled with the minimum, 25%, 50%, 75%, and maximum pause times.
		PauseQuantiles: make([]time.Duration, 5),
	}
	debug.ReadGCStats(&gcStats)
	// Truncate GC stats to max 5 entries.
	if len(gcStats.PauseEnd) > 5 {

pkg runtime, type BlockProfileRecord struct, Cycles int64
pkg runtime, type BlockProfileRecord struct, embedded StackRecord
pkg runtime/debug, func FreeOSMemory()
pkg runtime/debug, func ReadGCStats(*GCStats)
pkg runtime/debug, func SetGCPercent(int) int
pkg runtime/debug, type GCStats struct
pkg runtime/debug, type GCStats struct, LastGC time.Time
pkg runtime/debug, type GCStats struct, NumGC int64