Mir
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Mir includes a utility called mirvanity
that can use a high speed camera to measure the visual latency of your display (from client rendering to your eye).
It is called "mirvanity" because it works by rendering a pattern to the screen and then looking at the screen itself via the camera. In theory you could also use a laptop screen and webcam with a mirror, however laptop webcams tend to be too slow for this task. In order to use mirvanity
you need a high speed camera supported by Linux, such as a PlayStation Eye.
mirvanity
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Generated on Thu Sep 8 14:50:19 UTC 2016