// in the chunk in a single GC cycle for it to be considered high density.
	scavChunkHiOccFrac  = 0.96875
	scavChunkHiOccPages = uint16(scavChunkHiOccFrac * pallocChunkPages)
)

// heapRetained returns an estimate of the current heap RSS.
func heapRetained() uint64 {
	return gcController.heapInUse.load() + gcController.heapFree.load()
}

// gcPaceScavenger updates the scavenger's pacing, particularly

			throw("heapReleased and consistent stats are not equal")
		}
		heapRetained := gcController.heapInUse.load() + gcController.heapFree.load()
		consRetained := uint64(consStats.committed - consStats.inStacks - consStats.inWorkBufs - consStats.inPtrScalarBits)
		if heapRetained != consRetained {
			print("runtime: global value=", heapRetained, "\n")
			print("runtime: consistent value=", consRetained, "\n")

		// Only bother with this because we're not using a memory limit. We don't
		// care about heap growths as long as we're under the memory limit, and the
		// previous check for scaving already handles that.
		if retained := heapRetained(); retained+uint64(growth) > goal {
			// The scavenging algorithm requires the heap lock to be dropped so it
			// can acquire it only sparingly. This is a potentially expensive operation