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[Qemu-devel] [Bug 1802915] Re: GTK display refresh rate is throttled

From: Thomas Arouge
Subject: [Qemu-devel] [Bug 1802915] Re: GTK display refresh rate is throttled
Date: Sat, 15 Dec 2018 14:50:05 -0000

Instead of changing the value, I think there should be a function that
determines the ideal "GUI_REFRESH_INTERVAL_DEFAULT" value, with the
option to override it. That way, monitor greater than 60 Hz can also

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  GTK display refresh rate is throttled

Status in QEMU:

Bug description:
  Guest OS running with GL enabled GTK display shows a reduced refresh
  rate, e.g. moving cursor around with iGVT-g DMA Buf.

  Apparently, a default refresh interval GUI_REFRESH_INTERVAL_DEFAULT
  (30ms) is defined in include/ui/console.h, throttling the display
  refresh rate at 33Hz.

  To correct this throttle issue, a shorter interval (16 or 17
  milliseconds) should be applied to display change listener or the
  default value should be modified.

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