protonscr

Async Reprojection random high compositor cpu frametimes when focusing unrelated windows

steamvropen
ValveSoftware/SteamVR-for-Linux#182 · opened 2019-03-03 by ChristophHaag · updated 2019-03-03 · 0 comments · github
CChristophHaag 2019-03-03 github

Your system information

  • Steam client version (build number or date): Feb 18 2019
  • Distribution (e.g. Ubuntu): Archlinux
  • Graphics driver version (run nvidia-settings): mesa git cb4e3e3ef6e
  • Opted into Steam client beta?: Yes
  • Opted into SteamVR beta?: Yes

Please describe your issue in as much detail as possible:

I've seen this a couple of times but doesn't seem to have a noticeable negative effect.

While reprojection is running, when focusing/unfocusing completely unrelated windows, sometimes the advanced frametime graph starts showing consistent high compositor cpu times.
As captured in this image, it temporarily disappears when reprojection is not needed, but reappears as soon as it is activated again. For the last few frames I focused spectacle to take the screenshot which caused it to randomly go away - but focusing random windows with a mouse click would bring it back.
screenshot_20190303_232543
CPU usage of vrcompositor seems unaffected.

In this case it appeared when I focused spectacle for taking the screenshot, where in the other one it disappeared when I focused spectacle.
screenshot_20190303_231502

Nothing extracted yet.