Higher Cpu usage than before

tildearrow / kwin-lowlatency

archived - X11 full-screen unredirection and lots'a settings for KWin

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Higher Cpu usage than before #66

Closed StarrKiss closed 4 years ago

StarrKiss commented 4 years ago

Before the 5.18.3 update (on manjaro) kwin with Lowlatency regularly used little to no cpu. Now, it can use up to 7 percent. I have established that happens when mouse is hovering over things running Vulkan. Why this happens, I have no idea.

Screenshot_20200314_133224

aufkrawall commented 4 years ago

Try specifically setting the vsync mechanism to "none and hope for the best". Perhaps it resorts to glfinish also for Nvidia in auto mode now, which causes higher CPU load with their driver. Just a wild guess though.

tildearrow commented 4 years ago

@StarrKiss Can you report the output of qdbus org.kde.KWin /KWin supportInformation, and provide the value of the "VSync mechanism" setting? (under System Settings > Display and Monitor > Compositor)

Oh wait, I see "nvidia" in the screenshot. I think I got to test using my NVIDIA card again :<

tildearrow commented 4 years ago

No response D:

I cannot determine the cause without a response :<

Please re-open the issue if you can provide feedback.