ca341ef1ea
Store only two values per kind of duration: The short term and long term maximum. The short term maximum is updated in each frame clock dispatch. The long term maximum is updated at most once per second: If the short term maximum is higher, the long term maximum is updated to match it. Otherwise, a fraction of the delta between the two maxima is subtracted from the long term maximum. Compared to the previous algorithm: * The calculcations are simpler. * The calculated max render time has a slow exponential drop-off (by at most a few milliseconds every second) instead of potentially abruptly dropping after as few as 16 frames. This should fix https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/4830 since the short term maximum should always include a sample from the clock's second tick. v2: * Use divisor 2 instead of 4. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2500> |
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