Very high cpu usage - Githubissues

Whenever i move a window, my cpu usage spikes to 80-100%. In KDE it's just 10-15%. I'm trying openbox because i though it was easier on performance than a heavier WM like Kwin.

Platform

Arcolinux 5.7.8-arch1-1

GPU, drivers, and screen setup

i3 3220 with integrated graphics Xeon E3-1200 v2/3rd gen core processor

name of display: :0 display: :0 screen: 0 direct rendering: Yes Extended renderer info (GLX_MESA_query_renderer): Vendor: VMware, Inc. (0xffffffff) Device: llvmpipe (LLVM 10.0.0, 256 bits) (0xffffffff) Version: 20.1.3 Accelerated: no Video memory: 2991MB Unified memory: no Preferred profile: core (0x1) Max core profile version: 3.3 Max compat profile version: 3.1 Max GLES1 profile version: 1.1 Max GLES[23] profile version: 3.1 OpenGL vendor string: VMware, Inc. OpenGL renderer string: llvmpipe (LLVM 10.0.0, 256 bits) OpenGL core profile version string: 3.3 (Core Profile) Mesa 20.1.3 OpenGL core profile shading language version string: 3.30 OpenGL core profile context flags: (none) OpenGL core profile profile mask: core profile

OpenGL version string: 3.1 Mesa 20.1.3 OpenGL shading language version string: 1.40 OpenGL context flags: (none)

OpenGL ES profile version string: OpenGL ES 3.1 Mesa 20.1.3 OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10

Environment

Openbox

picom version

vgit-d718c

Version: vgit-d718c

Extensions:

Shape: Yes
XRandR: Yes
Present: Present

Misc:

Use Overlay: Yes* Config file used: /home/antares/.config/picom.conf

Drivers (inaccurate):

Configuration:

# Thank you code_nomad: http://9m.no/ꪯ鵞
# and Arch Wiki contributors: https://wiki.archlinux.org/index.php/Compton

#################################
#
# Backend
#
#################################

# Backend to use: "xrender" or "glx".
# GLX backend is typically much faster but depends on a sane driver.
backend = "glx";
#backend = "xrender"

#################################
#
# GLX backend
#
#################################

glx-no-stencil = true;

# GLX backend: Copy unmodified regions from front buffer instead of redrawing them all.
# My tests with nvidia-drivers show a 10% decrease in performance when the whole screen is modified,
# but a 20% increase when only 1/4 is.
# My tests on nouveau show terrible slowdown.
#glx-copy-from-front = true;

# GLX backend: Use MESA_copy_sub_buffer to do partial screen update.
# My tests on nouveau shows a 200% performance boost when only 1/4 of the screen is updated.
# May break VSync and is not available on some drivers.
# Overrides --glx-copy-from-front.
#glx-use-copysubbuffermesa = true;

# GLX backend: Avoid rebinding pixmap on window damage.
# Probably could improve performance on rapid window content changes, but is known to break things on some drivers (LLVMpipe).
# Recommended if it works.
# glx-no-rebind-pixmap = true;

# GLX backend: GLX buffer swap method we assume.
# Could be undefined (0), copy (1), exchange (2), 3-6, or buffer-age (-1).
# undefined is the slowest and the safest, and the default value.
# copy is fastest, but may fail on some drivers,
# 2-6 are gradually slower but safer (6 is still faster than 0).
# Usually, double buffer means 2, triple buffer means 3.
# buffer-age means auto-detect using GLX_EXT_buffer_age, supported by some drivers.
# Useless with --glx-use-copysubbuffermesa.
# Partially breaks --resize-damage.
# Defaults to undefined.
#glx-swap-method = "undefined";

#################################
#
# Shadows
#
#################################

# Enabled client-side shadows on windows.
shadow = true;
# The blur radius for shadows. (default 12)
shadow-radius = 7;
# The left offset for shadows. (default -15)
shadow-offset-x = -15;
# The top offset for shadows. (default -15)
shadow-offset-y = -15;
# The translucency for shadows. (default .75)
shadow-opacity = 0.5;

log-level = "warn";
#change your username here
#log-file = "/home/erik/.config/compton.log";

# Set if you want different colour shadows
shadow-red = 0.0;
shadow-green = 0.0;
shadow-blue = 0.0;

# The shadow exclude options are helpful if you have shadows enabled. Due to the way compton draws its shadows, certain applications will have visual glitches
# (most applications are fine, only apps that do weird things with xshapes or argb are affected).
# This list includes all the affected apps I found in my testing. The "! name~=''" part excludes shadows on any "Unknown" windows, this prevents a visual glitch with the XFWM alt tab switcher.
shadow-exclude = [
    "name = 'Notification'",
    "name = 'Plank'",
    "name = 'Docky'",
    "name = 'Kupfer'",
    "name = 'xfce4-notifyd'",
    "name *= 'VLC'",
    "name *= 'compton'",
    "name *= 'picom'",
    "name *= 'Chromium'",
    "name *= 'Chrome'",
    "class_g = 'Firefox' && argb",
    "class_g = 'Conky'",
    "class_g = 'Kupfer'",
    "class_g = 'Synapse'",
    "class_g ?= 'Notify-osd'",
    "class_g ?= 'Cairo-dock'",
    "class_g = 'Cairo-clock'",
    "class_g ?= 'Xfce4-notifyd'",
    "class_g ?= 'Xfce4-power-manager'",
    "_GTK_FRAME_EXTENTS@:c",
    "_NET_WM_STATE@:32a *= '_NET_WM_STATE_HIDDEN'"
];
# Avoid drawing shadow on all shaped windows (see also: --detect-rounded-corners)
shadow-ignore-shaped = false;

#################################
#
# Opacity
#
#################################

inactive-opacity = 1.0;
active-opacity = 1.0;
frame-opacity = 1.0;
inactive-opacity-override = false;

# Dim inactive windows. (0.0 - 1.0)
# inactive-dim = 0.2;
# Do not let dimness adjust based on window opacity.
# inactive-dim-fixed = true;
# Blur background of transparent windows. Bad performance with X Render backend. GLX backend is preferred.
# blur-background = true;
# Blur background of opaque windows with transparent frames as well.
# blur-background-frame = true;
# Do not let blur radius adjust based on window opacity.
blur-background-fixed = false;
blur-background-exclude = [
    "window_type = 'dock'",
    "window_type = 'desktop'",
    "_GTK_FRAME_EXTENTS@:c"
];

#################################
#
# Fading
#
#################################

# Fade windows during opacity changes.
fading = true;
# The time between steps in a fade in milliseconds. (default 10).
fade-delta = 20;
# Opacity change between steps while fading in. (default 0.028).
fade-in-step = 0.03;
# Opacity change between steps while fading out. (default 0.03).
fade-out-step = 0.03;
# Fade windows in/out when opening/closing
no-fading-openclose = false;

# Specify a list of conditions of windows that should not be faded.
fade-exclude = [ ];

#################################
#
# Other
#
#################################

# Try to detect WM windows and mark them as active.
mark-wmwin-focused = true;
# Mark all non-WM but override-redirect windows active (e.g. menus).
mark-ovredir-focused = true;
# Use EWMH _NET_WM_ACTIVE_WINDOW to determine which window is focused instead of using FocusIn/Out events.
# Usually more reliable but depends on a EWMH-compliant WM.
use-ewmh-active-win = true;
# Detect rounded corners and treat them as rectangular when --shadow-ignore-shaped is on.
detect-rounded-corners = true;

# Detect _NET_WM_OPACITY on client windows, useful for window managers not passing _NET_WM_OPACITY of client windows to frame windows.
# This prevents opacity being ignored for some apps.
# For example without this enabled my xfce4-notifyd is 100% opacity no matter what.
detect-client-opacity = true;

# Specify refresh rate of the screen.
# If not specified or 0, picom will try detecting this with X RandR extension.
refresh-rate = 0;

# Vertical synchronization: match the refresh rate of the monitor
# this breaks transparency in virtualbox - put a "#" before next line to fix that
#vsync = true;

# Enable DBE painting mode, intended to use with VSync to (hopefully) eliminate tearing.
# Reported to have no effect, though.
dbe = false;

# Limit picom to repaint at most once every 1 / refresh_rate second to boost performance.
# This should not be used with --vsync drm/opengl/opengl-oml as they essentially does --sw-opti's job already,
# unless you wish to specify a lower refresh rate than the actual value.
#sw-opti = true;

# Unredirect all windows if a full-screen opaque window is detected, to maximize performance for full-screen windows, like games.
# Known to cause flickering when redirecting/unredirecting windows.
unredir-if-possible = false;

# Specify a list of conditions of windows that should always be considered focused.
focus-exclude = [ ];

# Use WM_TRANSIENT_FOR to group windows, and consider windows in the same group focused at the same time.
detect-transient = true;
# Use WM_CLIENT_LEADER to group windows, and consider windows in the same group focused at the same time.
# WM_TRANSIENT_FOR has higher priority if --detect-transient is enabled, too.
detect-client-leader = true;

#################################
#
# Window type settings
#
#################################

wintypes:
{
  tooltip = { fade = true; shadow = true; opacity = 0.9; focus = true;};
  dock = { shadow = false; }
  dnd = { shadow = false; }
  popup_menu = { opacity = 0.9; }
  dropdown_menu = { opacity = 0.9; }
};

######################
#
# XSync
# See: https://github.com/yshui/compton/commit/b18d46bcbdc35a3b5620d817dd46fbc76485c20d
#
######################

# Use X Sync fence to sync clients' draw calls. Needed on nvidia-drivers with GLX backend for some users.
xrender-sync-fence = true;

Steps of reproduction

1. 2.

Expected behavior

15-25% cpu usage

Current Behavior

80-100% cpu usage

yshui / picom

Very high cpu usage #446