const runtime.timeHistNumSubBuckets

8 uses

	runtime (current package)
		histogram.go#L68: 	timeHistNumSubBuckets = 1 << timeHistSubBucketBits
		histogram.go#L71: 	timeHistTotalBuckets = timeHistNumBuckets*timeHistNumSubBuckets + 2
		histogram.go#L85: 	counts [timeHistNumBuckets * timeHistNumSubBuckets]atomic.Uint64
		histogram.go#L133: 	subBucket := uint(duration>>(bucketBit-1-timeHistSubBucketBits)) % timeHistNumSubBuckets
		histogram.go#L134: 	h.counts[bucket*timeHistNumSubBuckets+subBucket].Add(1)
		histogram.go#L173: 	for j := 0; j < timeHistNumSubBuckets; j++ {
		histogram.go#L184: 		for j := 0; j < timeHistNumSubBuckets; j++ {
		histogram.go#L193: 			bucketIndex := (i-timeHistMinBucketBits+1)*timeHistNumSubBuckets + j + 1