--- Begin Message ---
- To: Debian Bug Tracking System <submit@bugs.debian.org>
- Subject: xfwm4: xfwm4 gradually increases CPU load, lags itself and creates lag for other applications after prolonged use
- From: xcdc dxcx <xcdcdxcx@gmail.com>
- Date: Fri, 1 May 2020 14:09:26 +0300
- Message-id: <CAJrAFG_fPJ+TSnS+Rc9A0xDQUR3heRj+0bU1J_54dJqdKFF+sA@mail.gmail.com>
Package: xfwm4
Version: 4.14.0-2
Severity: wishlist
Dear Maintainer,
xfwm4 process after 10-15 days of uptime gradually starts to consume
significant amounts of CPU:
- up to 15-18% of a CPU core in completely idle state
- up to 80-100% of a CPU core when switching between windows with alt-tab
For reference, immediately after launch the process consumes between
0.7% and 1% of a CPU core when idle.
Additionally, opengl-based applications are also negatively affected
(lower framerate and increased CPU load) by xfwm4 when it is in such
laggy state.
I am using Intel HD630 GPU, I have not tried to reproduce this on
other hardware, however I never had this problem in xfce 4.12 or
before.
What I have tried:
- changing vblank mode of xfwm4: has no effect - the bug manifests
with all vblank modes
- changing xorg driver: has no effect - the bug manifests both with
'intel' and 'modesetting' drivers
- changing TearFree option of 'intel' xorg driver on/off: no effect -
the bug manifests regardless of the state of this setting
- restarting xfwm periodically (menu -> run -> xfwm4 --replace) - this
fixes the problem until it surfaces again after the same period of
time
This is a very significant regression compared to xfwm in xfce 4.12.
The upstream has not been able to fix this during last 8 months:
https://bugzilla.xfce.org/show_bug.cgi?id=15963
-- System Information:
Debian Release: bullseye/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.4.0-1-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE,
TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8),
LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages xfwm4 depends on:
ii libc6 2.29-7
ii libcairo2 1.16.0-4
ii libepoxy0 1.5.4-1
ii libgdk-pixbuf2.0-0 2.40.0+dfsg-2
ii libglib2.0-0 2.62.4-1
ii libgtk-3-0 3.24.13-1
ii libpango-1.0-0 1.42.4-8
ii libpangocairo-1.0-0 1.42.4-8
ii libstartup-notification0 0.12-6
ii libwnck-3-0 3.32.0-1
ii libx11-6 2:1.6.8-1
ii libxcomposite1 1:0.4.5-1
ii libxdamage1 1:1.1.5-1
ii libxext6 2:1.3.3-1+b2
ii libxfce4ui-2-0 4.14.1-1+b1
ii libxfce4util7 4.14.0-1
ii libxfconf-0-3 4.14.1-1
ii libxfixes3 1:5.0.3-1
ii libxi6 2:1.7.9-1
ii libxinerama1 2:1.1.4-2
ii libxpresent1 1.0.0-2+b10
ii libxrandr2 2:1.5.1-1
ii libxrender1 1:0.9.10-1
Versions of packages xfwm4 recommends:
ii librsvg2-common 2.46.4-1
Versions of packages xfwm4 suggests:
ii xfce4 4.14
-- no debconf information
--- End Message ---