You sometimes have to use a bit of guesswork to find the best `bs` value, 8M is usually faster IME. I think gnome-disk benchmarks it? Now, you could also do wi

You sometimes have to use a bit of guesswork to find the best `bs` value, 8M is usually faster IME. I think gnome-disk benchmarks it? Now, you could also do without fsync, and call `sync` at the end, it could be faster.