Public bug reported:
gnome-shell uses 30-100% CPU
After investigation problem is because a lot of recvmsg:
strace:
---------
recvmsg(16, {msg_namelen=0}, 0) = -1 EAGAIN (Zasoby chwilowo
niedostępne)
recvmsg(16, {msg_namelen=0}, 0) = -1 EAGAIN (Zasoby chwilowo
niedostępne)
recvmsg(6, {msg_namelen=0}, 0) = -1 EAGAIN (Zasoby chwilowo
niedostępne)
recvmsg(6, {msg_namelen=0}, 0) = -1 EAGAIN (Zasoby chwilowo
niedostępne)
recvmsg(16, {msg_namelen=0}, 0) = -1 EAGAIN (Zasoby chwilowo
niedostępne)
recvmsg(16, {msg_namelen=0}, 0) = -1 EAGAIN (Zasoby chwilowo
niedostępne)
recvmsg(6, {msg_namelen=0}, 0) = -1 EAGAIN (Zasoby chwilowo
niedostępne)
recvmsg(6, {msg_namelen=0}, 0) = -1 EAGAIN (Zasoby chwilowo
niedostępne)
----------
lsof output:
gnome-she 14772 xxx 6u unix 0x0000000000000000 0t0 133056
type=STREAM
gnome-she 14772 xxx 16u unix 0x0000000000000000 0t0 133062
type=STREAM
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gnome-shell 42.4-0ubuntu0.22.04.1
ProcVersionSignature: Ubuntu 5.15.0-50.56-generic 5.15.60
Uname: Linux 5.15.0-50-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Oct 16 18:50:20 2022
DisplayManager: gdm3
EcryptfsInUse: Yes
InstallationDate: Installed on 2022-09-29 (17 days ago)
InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64
(20220809.1)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=pl_PL.UTF-8
SHELL=/bin/bash
RelatedPackageVersions: mutter-common 42.2-0ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug jammy
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https://bugs.launchpad.net/bugs/1993074
Title:
Many recvmsg messages
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