How did he actually measure the latency in this article? Doesn't measuring keypresses to display latency require special hardware? All tests were done on a du

How did he actually measure the latency in this article? Doesn't measuring keypresses to display latency require special hardware? All tests were done on a dual core 2.6GHz 13” Mid-2014 Macbook pro. The machine has 16GB of RAM and a 2560x1600 screen. The OS X version was 10.12.5. Some tests were done in Linux (Lubuntu 16.04) to get a comparison between macOS and Linux. 10k keypresses were for each latency measurements. Latency measurements were done with the . key and throughput was done with default base32 output, which is all plain ASCII text. This is significant. For example, terminal.app appears to slow down when outputting non-latin unicode characters.