When I restart gnome-shell using alt + F2 + r major issues like:
- Unresponsive windows
- Unresponsive desktop
- High RAM usage
get fixed perfectly. So, why exactly does it work and what exactly happens when you restart gnome-shell?
When I run ls -al ~/.local/share/gnome-shell/extensions I see
total 16
drwxrwxr-x 4 abhay abhay 4096 May 16 15:08 .
drwx------ 3 abhay abhay 4096 Jun 1 03:12 ..
drwxrwxr-x 4 abhay abhay 4096 May 16 15:02 [email protected]
drwxrwxr-x 4 abhay abhay 4096 May 3 15:28 [email protected]
When I run ls -al /usr/share/gnome-shell/extensions I see
total 20
drwxr-xr-x 5 root root 4096 Apr 23 13:05 .
drwxr-xr-x 7 root root 4096 May 23 01:14 ..
drwxr-xr-x 2 root root 4096 Apr 23 13:05 desktop-icons@csoriano
drwxr-xr-x 3 root root 4096 Apr 23 13:05 [email protected]
drwxr-xr-x 3 root root 4096 May 27 15:38 [email protected]
When I run free -h I see
total used free shared buff/cache available
Mem: 7.6Gi 1.5Gi 4.9Gi 289Mi 1.1Gi 5.5Gi
Swap: 4.0Gi 0B 4.0Gi
When I run top I see
top - 23:26:52 up 6 min, 1 user, load average: 1.01, 1.02, 0.57
Tasks: 300 total, 1 running, 299 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.4 us, 0.2 sy, 0.0 ni, 99.3 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 7801.6 total, 5044.1 free, 1599.8 used, 1157.7 buff/cache
MiB Swap: 4096.0 total, 4096.0 free, 0.0 used. 5666.4 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1757 abhay 20 0 912636 118792 79564 S 3.3 1.5 0:35.37 Xorg
2382 abhay 20 0 965964 49564 37136 S 3.3 0.6 0:05.89 gnome-terminal-
2002 abhay 20 0 4924592 277768 116092 S 2.3 3.5 0:36.19 gnome-shell
2608 abhay 20 0 2895956 378652 191188 S 0.7 4.7 0:35.07 Web Content
1 root 20 0 167704 11632 8480 S 0.3 0.1 0:03.13 systemd
1956 abhay 20 0 162812 7596 6816 S 0.3 0.1 0:00.20 at-spi2-registr
2496 abhay 20 0 3564084 393188 186492 S 0.3 4.9 1:03.71 firefox
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_gp
4 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_par_gp
5 root 20 0 0 0 0 I 0.0 0.0 0:00.00 kworker/0:0-cgroup_destroy
6 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/0:0H-kblockd
7 root 20 0 0 0 0 I 0.0 0.0 0:00.06 kworker/0:1-events
8 root 20 0 0 0 0 I 0.0 0.0 0:00.98 kworker/u24:0-events_unbound
9 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 mm_percpu_wq
10 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
11 root 20 0 0 0 0 I 0.0 0.0 0:00.41 rcu_sched
12 root rt 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
13 root -51 0 0 0 0 S 0.0 0.0 0:00.00 idle_inject/0
14 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/0
15 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/1
16 root -51 0 0 0 0 S 0.0 0.0 0:00.00 idle_inject/1
17 root rt 0 0 0 0 S 0.0 0.0 0:00.06 migration/1
18 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/1
20 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/1:0H-kblockd
21 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/2
22 root -51 0 0 0 0 S 0.0 0.0 0:00.00 idle_inject/2
23 root rt 0 0 0 0 S 0.0 0.0 0:00.06 migration/2
24 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/2
26 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/2:0H-kblockd
27 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/3
28 root -51 0 0 0 0 S 0.0 0.0 0:00.00 idle_inject/3
29 root rt 0 0 0 0 S 0.0 0.0 0:00.07 migration/3
30 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/3
When I run systemd-analyze blame I see
1min 30.122s nmbd.service
12.973s networkd-dispatcher.service
11.924s udisks2.service
11.297s snapd.service
8.876s samba-ad-dc.service
7.313s dev-sdb3.device
5.269s NetworkManager.service
5.225s accounts-daemon.service
4.762s polkit.service
3.740s ModemManager.service
3.666s avahi-daemon.service
3.665s bluetooth.service
3.300s switcheroo-control.service
3.295s thermald.service
3.292s wpa_supplicant.service
3.291s systemd-logind.service
2.996s dev-loop4.device
2.970s gpu-manager.service
2.881s dev-loop5.device
2.798s systemd-resolved.service
2.622s dev-loop3.device
2.496s apport.service
2.443s grub-common.service
2.006s gdm.service
1.915s dev-loop0.device
1.761s rsyslog.service
1.756s secureboot-db.service
1.640s grub-initrd-fallback.service
1.373s dev-loop2.device
1.370s dev-loop1.device
995ms systemd-tmpfiles-setup.service
823ms upower.service
816ms pppd-dns.service
776ms e2scrub_reap.service
738ms systemd-fsck@dev-disk-by\x2duuid-E866\x2d1E0F.service
723ms systemd-modules-load.service
717ms apparmor.service
713ms tlp.service
542ms systemd-sysusers.service
541ms systemd-random-seed.service
515ms systemd-timesyncd.service
508ms snapd.seeded.service
507ms smbd.service
480ms systemd-journald.service
457ms swapfile.swap
434ms systemd-udevd.service
430ms systemd-udev-trigger.service
347ms snapd.apparmor.service
342ms keyboard-setup.service
333ms snap-bitwarden-25.mount
319ms colord.service
318ms snap-bitwarden-24.mount
299ms snap-core18-1754.mount
266ms snap-snapd-7264.mount
256ms [email protected]
255ms snap-gtk\x2dcommon\x2dthemes-1506.mount
240ms systemd-backlight@backlight:intel_backlight.service
235ms snap-gnome\x2d3\x2d28\x2d1804-116.mount
227ms systemd-tmpfiles-setup-dev.service
224ms kerneloops.service
213ms binfmt-support.service
196ms systemd-sysctl.service
182ms setvtrgb.service
175ms ufw.service
141ms openvpn.service
140ms geoclue.service
135ms [email protected]
127ms systemd-remount-fs.service
106ms console-setup.service
104ms plymouth-read-write.service
98ms dev-hugepages.mount
97ms dev-mqueue.mount
96ms sys-kernel-debug.mount
96ms sys-kernel-tracing.mount
92ms kmod-static-nodes.service
89ms systemd-user-sessions.service
85ms boot-efi.mount
67ms systemd-tmpfiles-clean.service
28ms systemd-update-utmp.service
25ms rtkit-daemon.service
25ms proc-sys-fs-binfmt_misc.mount
23ms systemd-journal-flush.service
14ms systemd-update-utmp-runlevel.service
13ms [email protected]
9ms alsa-restore.service
4ms sys-fs-fuse-connections.mount
3ms plymouth-quit-wait.service
3ms sys-kernel-config.mount
825us snapd.socket
When I run cat /etc/fstab I see
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sdb3 during installation
UUID=729e17ba-8e24-41fb-ab2d-779ba62bfb60 / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sdb2 during installation
UUID=E866-1E0F /boot/efi vfat umask=0077 0 1
/swapfile none swap sw 0 0
When I run cat /etc/samba/smb.conf I see
#
# Sample configuration file for the Samba suite for Debian GNU/Linux.
#
#
# This is the main Samba configuration file. You should read the
# smb.conf(5) manual page in order to understand the options listed
# here. Samba has a huge number of configurable options most of which
# are not shown in this example
#
# Some options that are often worth tuning have been included as
# commented-out examples in this file.
# - When such options are commented with ";", the proposed setting
# differs from the default Samba behaviour
# - When commented with "#", the proposed setting is the default
# behaviour of Samba but the option is considered important
# enough to be mentioned here
#
# NOTE: Whenever you modify this file you should run the command
# "testparm" to check that you have not made any basic syntactic
# errors.
#======================= Global Settings =======================
[global]
## Browsing/Identification ###
# Change this to the workgroup/NT-domain name your Samba server will part of
workgroup = WORKGROUP
# server string is the equivalent of the NT Description field
server string = %h server (Samba, Ubuntu)
#### Networking ####
# The specific set of interfaces / networks to bind to
# This can be either the interface name or an IP address/netmask;
# interface names are normally preferred
; interfaces = 127.0.0.0/8 eth0
# Only bind to the named interfaces and/or networks; you must use the
# 'interfaces' option above to use this.
# It is recommended that you enable this feature if your Samba machine is
# not protected by a firewall or is a firewall itself. However, this
# option cannot handle dynamic or non-broadcast interfaces correctly.
; bind interfaces only = yes
#### Debugging/Accounting ####
# This tells Samba to use a separate log file for each machine
# that connects
log file = /var/log/samba/log.%m
# Cap the size of the individual log files (in KiB).
max log size = 1000
# We want Samba to only log to /var/log/samba/log.{smbd,nmbd}.
# Append syslog@1 if you want important messages to be sent to syslog too.
logging = file
# Do something sensible when Samba crashes: mail the admin a backtrace
panic action = /usr/share/samba/panic-action %d
####### Authentication #######
# Server role. Defines in which mode Samba will operate. Possible
# values are "standalone server", "member server", "classic primary
# domain controller", "classic backup domain controller", "active
# directory domain controller".
#
# Most people will want "standalone server" or "member server".
# Running as "active directory domain controller" will require first
# running "samba-tool domain provision" to wipe databases and create a
# new domain.
server role = standalone server
obey pam restrictions = yes
# This boolean parameter controls whether Samba attempts to sync the Unix
# password with the SMB password when the encrypted SMB password in the
# passdb is changed.
unix password sync = yes
# For Unix password sync to work on a Debian GNU/Linux system, the following
# parameters must be set (thanks to Ian Kahan <<[email protected]> for
# sending the correct chat script for the passwd program in Debian Sarge).
passwd program = /usr/bin/passwd %u
passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
# This boolean controls whether PAM will be used for password changes
# when requested by an SMB client instead of the program listed in
# 'passwd program'. The default is 'no'.
pam password change = yes
# This option controls how unsuccessful authentication attempts are mapped
# to anonymous connections
map to guest = bad user
########## Domains ###########
#
# The following settings only takes effect if 'server role = primary
# classic domain controller', 'server role = backup domain controller'
# or 'domain logons' is set
#
# It specifies the location of the user's
# profile directory from the client point of view) The following
# required a [profiles] share to be setup on the samba server (see
# below)
; logon path = \\%N\profiles\%U
# Another common choice is storing the profile in the user's home directory
# (this is Samba's default)
# logon path = \\%N\%U\profile
# The following setting only takes effect if 'domain logons' is set
# It specifies the location of a user's home directory (from the client
# point of view)
; logon drive = H:
# logon home = \\%N\%U
# The following setting only takes effect if 'domain logons' is set
# It specifies the script to run during logon. The script must be stored
# in the [netlogon] share
# NOTE: Must be store in 'DOS' file format convention
; logon script = logon.cmd
# This allows Unix users to be created on the domain controller via the SAMR
# RPC pipe. The example command creates a user account with a disabled Unix
# password; please adapt to your needs
; add user script = /usr/sbin/adduser --quiet --disabled-password --gecos "" %u
# This allows machine accounts to be created on the domain controller via the
# SAMR RPC pipe.
# The following assumes a "machines" group exists on the system
; add machine script = /usr/sbin/useradd -g machines -c "%u machine account" -d /var/lib/samba -s /bin/false %u
# This allows Unix groups to be created on the domain controller via the SAMR
# RPC pipe.
; add group script = /usr/sbin/addgroup --force-badname %g
############ Misc ############
# Using the following line enables you to customise your configuration
# on a per machine basis. The %m gets replaced with the netbios name
# of the machine that is connecting
; include = /home/samba/etc/smb.conf.%m
# Some defaults for winbind (make sure you're not using the ranges
# for something else.)
; idmap config * : backend = tdb
; idmap config * : range = 3000-7999
; idmap config YOURDOMAINHERE : backend = tdb
; idmap config YOURDOMAINHERE : range = 100000-999999
; template shell = /bin/bash
# Setup usershare options to enable non-root users to share folders
# with the net usershare command.
# Maximum number of usershare. 0 means that usershare is disabled.
# usershare max shares = 100
# Allow users who've been granted usershare privileges to create
# public shares, not just authenticated ones
usershare allow guests = yes
#======================= Share Definitions =======================
# Un-comment the following (and tweak the other settings below to suit)
# to enable the default home directory shares. This will share each
# user's home directory as \\server\username
;[homes]
; comment = Home Directories
; browseable = no
# By default, the home directories are exported read-only. Change the
# next parameter to 'no' if you want to be able to write to them.
; read only = yes
# File creation mask is set to 0700 for security reasons. If you want to
# create files with group=rw permissions, set next parameter to 0775.
; create mask = 0700
# Directory creation mask is set to 0700 for security reasons. If you want to
# create dirs. with group=rw permissions, set next parameter to 0775.
; directory mask = 0700
# By default, \\server\username shares can be connected to by anyone
# with access to the samba server.
# Un-comment the following parameter to make sure that only "username"
# can connect to \\server\username
# This might need tweaking when using external authentication schemes
; valid users = %S
# Un-comment the following and create the netlogon directory for Domain Logons
# (you need to configure Samba to act as a domain controller too.)
;[netlogon]
; comment = Network Logon Service
; path = /home/samba/netlogon
; guest ok = yes
; read only = yes
# Un-comment the following and create the profiles directory to store
# users profiles (see the "logon path" option above)
# (you need to configure Samba to act as a domain controller too.)
# The path below should be writable by all users so that their
# profile directory may be created the first time they log on
;[profiles]
; comment = Users profiles
; path = /home/samba/profiles
; guest ok = no
; browseable = no
; create mask = 0600
; directory mask = 0700
[printers]
comment = All Printers
browseable = no
path = /var/spool/samba
printable = yes
guest ok = no
read only = yes
create mask = 0700
# Windows clients look for this share name as a source of downloadable
# printer drivers
[print$]
comment = Printer Drivers
path = /var/lib/samba/printers
browseable = yes
read only = yes
guest ok = no
# Uncomment to allow remote administration of Windows print drivers.
# You may need to replace 'lpadmin' with the name of the group your
# admin users are members of.
# Please note that you also need to set appropriate Unix permissions
# to the drivers directory for these users to have write rights in it
; write list = root, @lpadmin
When I run testparm I see
Load smb config files from /etc/samba/smb.conf
Loaded services file OK.
Server role: ROLE_STANDALONE
Press enter to see a dump of your service definitions
# Global parameters
[global]
log file = /var/log/samba/log.%m
logging = file
map to guest = Bad User
max log size = 1000
obey pam restrictions = Yes
pam password change = Yes
panic action = /usr/share/samba/panic-action %d
passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
passwd program = /usr/bin/passwd %u
server role = standalone server
server string = %h server (Samba, Ubuntu)
unix password sync = Yes
usershare allow guests = Yes
idmap config * : backend = tdb
[printers]
browseable = No
comment = All Printers
create mask = 0700
path = /var/spool/samba
printable = Yes
[print$]
comment = Printer Drivers
path = /var/lib/samba/printers
Swappiness is set to 60.
From the comments...
removed a bunch of GNOME Shell extensions to solve high usage.
reinstalled Samba to cure
nmbdproblemsystem boot times ~30 seconds
GNOME Shell CPU/memory usage is now normal