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HTML/JavaScript mouse input performance tests

Instructions: Move the mouse around in the box below in a consistent motion. The
difference between hardware cursor (mouse pointer) and last recorded mouse
position (red box) is mouse input lag. The red circle represents 'two frames' of
input lag.

> WARNING: It you see a mouse event rate matching your display Hz, the web
> browser is likely collapsing several real mouse events into one faked mouse
> event! UPDATE: Chrome 60+ does this! details

Gray horizontal lines are every 5ms.
blue line: inter-mouse message times (best case is flat line). 8ms is typical
for mice/Windows; notebook trackpad is usually around 10ms to 12ms
gray line: mouse move message time offset from rAF time / vsync (best case:
consistent sawtooth pattern).

Show hardware cursor Use rAF time argument Graph Override event time with now()
Show mouse path




Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/96.0.4664.93 Safari/537.36


An example good result:

>