I could have not noticed use of swap in the previous test, so I repeated it on a Linux box and 1e8 numbers (instead of 1e9). Julia took 100.583ms while Python 2

I could have not noticed use of swap in the previous test, so I repeated it on a Linux box and 1e8 numbers (instead of 1e9). Julia took 100.583ms while Python 207ms (probably due to double reading of the array). So I guess adding 1e9 numbers should take about 1 second on a modern desktop CPU.