cd test && go test -bench=.Out put is
BenchmarkMatrixEven-12 26013 45509 ns/op
BenchmarkMatrixEvenByLocal-12 46527 25937 ns/op
BenchmarkTraversalSumByRow-12 22184 53765 ns/op
BenchmarkTraversalSumByColumn-12 12649 94891 ns/op
PASS
ok github.com/futhergo/cache-line-test/test 7.033s