Home / Chromebook / Here is How Google Tests Chromebook Touchpads

Here is How Google Tests Chromebook Touchpads

No surprises here. Google Chrome team has device and script that automates Chromebook touchpad testing. They call it Quickstep.

The Quickstep device is designed to facilitate the measurement of drag-latency for touch devices. We define drag-latency as the amount of time between a finger sliding over (x, y) on the device and the firmware reporting (x,y) to the kernel. This is distinct from tap-latency where you would be measuring the amount of time between a finger contacting the pad and the first report being fired. Quickstep does not measure tap-latency, only drag-latency. Similarly, this only measures the latency between the sensor, touch controller firmware, and up to the kernel, and does not involve the screen/graphics stack at all. This only measures low-level latency and is not intended as an end-to-end solution.

Read the full documentation here. Now, here is a video demo:

via François Beaufort

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