func BenchmarkDiffSmallUpper(b *testing.B) { graphtest.DriverBenchDiffN(b, 10, 10, driverName) }
func BenchmarkDiff10KFilesBottom(b *testing.B) { graphtest.DriverBenchDiffN(b, 10000, 10, "overlay") }
func BenchmarkDiff10KFilesBottom(b *testing.B) { graphtest.DriverBenchDiffN(b, 10000, 10, driverName) }
func BenchmarkDiffSmallUpper(b *testing.B) { graphtest.DriverBenchDiffN(b, 10, 10, "overlay") }