[Pkg-utopia-maintainers] Bug#1101799: xdg-desktop-portal: ends up in endless loop

[Matthias Urlichs]

On 01.04.25 13:56, Jeremy Bícha wrote:
> Please include what exact desktop environment you are using. What
> xdg-desktop-portal-* packages do you have installed?

I'm using the sway window manager, portals for -wlr and -gtk are 
installed and running.

Possibly of note is that my neovim session is set to auto-darkmode 
itself, thus it calls

dbus-send --session --print-reply=literal --reply-timeout=1000 
--dest=org.freedesktop.portal.Desktop /org/freedesktop/portal/desktop 
org.freedesktop.portal.Settings.Read string:'org.freedesktop.appearance' 
string:'color-scheme'

a couple of times per second (notionally every three seconds, but I have 
too many editor windows open).

Watching the process after restarting it, with ps, shows a slow increase 
in memory use and CPU time (started off at 9%, now at 13% after half an 
hour or so). So my current suspicion is that there's some request queue 
in there that doesn't get cleaned up properly, and as soon as that queue 
is long enough for CPU to reach 100% all hell breaks loose.

To verify that I started to hammer it with those dbus requests, which 
made the process's CPU load creep up much faster (about 1% per minute). 
The point is that after stopping these dbus-send loops the CPU time of 
"xdg-desktop-portal" does *not* go back down, instead it continues its 
slow creep towards 100%.


-- 
-- Matthias Urlichs