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SystemD - Linux Lite Guide
#1

Source - https://www.linux.com/learn/cleaning-you...up-process

Show which services are taking the longest to start up.

Code:
jerry[member=2]Jerry[/member]-VirtualBox:~$ systemd-analyze blame           5.260s NetworkManager-wait-online.service           725ms nmbd.service           645ms samba-ad-dc.service           635ms lvm2-monitor.service           623ms dev-sda1.device           492ms ufw.service           420ms ModemManager.service           411ms smbd.service           393ms systemd-logind.service           391ms accounts-daemon.service           327ms networking.service           253ms NetworkManager.service           250ms virtualbox-guest-utils.service           229ms ondemand.service           228ms apparmor.service           207ms irqbalance.service           183ms grub-common.service           177ms lightdm.service           166ms lm-sensors.service           158ms console-kit-log-system-start.service           134ms gpu-manager.service           117ms udisks2.service           110ms systemd-udev-trigger.service           108ms thermald.service             97ms console-kit-daemon.service             94ms console-setup.service             92ms systemd-udevd.service             90ms avahi-daemon.service             90ms upower.service             84ms systemd-modules-load.service             72ms plymouth-start.service             62ms rsyslog.service             54ms systemd-journald.service             52ms [email protected]             51ms polkitd.service             46ms systemd-tmpfiles-setup.service             43ms ubiquity.service             36ms systemd-tmpfiles-setup-dev.service             36ms hddtemp.service             33ms systemd-update-utmp.service             25ms systemd-journal-flush.service             23ms pppd-dns.service             23ms systemd-hostnamed.service             20ms systemd-user-sessions.service             19ms dev-hugepages.mount             19ms dns-clean.service             18ms rtkit-daemon.service             18ms plymouth-read-write.service             17ms sys-kernel-debug.mount             17ms dev-disk-by\x2duuid-0994cbe3\x2df958\x2d4b7d\x2d9fd4\x2d4f9149dcf127.swap             15ms kmod-static-nodes.service             14ms systemd-sysctl.service             14ms resolvconf.service             12ms systemd-update-utmp-runlevel.service             10ms systemd-remount-fs.service             10ms dev-mqueue.mount             8ms sys-fs-fuse-connections.mount             7ms systemd-random-seed.service             5ms openvpn.service             3ms rc-local.service             2ms plymouth-quit-wait.service

Code:
jerry[member=2]Jerry[/member]-VirtualBox:~$ systemd-analyze critical-chain The time when unit became active or started is printed after the "@" character. The time the unit took to start is printed after the "+" character. graphical.target @10.148s └─lightdm.service @7.019s +3.127s   └─systemd-user-sessions.service @7.002s +12ms     └─network.target @6.990s       └─networking.service @3.023s +3.966s         └─apparmor.service @2.901s +107ms           └─local-fs.target @2.899s             └─zfs-mount.service @2.883s +15ms               └─zfs-import.target @2.882s

List enabled boot services:

Code:
jerry[member=2]Jerry[/member]-VirtualBox:~$ systemctl list-unit-files --type=service | grep enabled accounts-daemon.service                    enabled [email protected]                            enabled avahi-daemon.service                      enabled bluetooth.service                          enabled casper.service                            enabled cgmanager.service                          enabled cgproxy.service                            enabled cron.service                              enabled cups-browsed.service                      enabled cups.service                              enabled dbus-org.bluez.service                    enabled dbus-org.freedesktop.Avahi.service        enabled dbus-org.freedesktop.ModemManager1.service enabled dbus-org.freedesktop.nm-dispatcher.service enabled dbus-org.freedesktop.thermald.service      enabled display-manager.service                    enabled dns-clean.service                          enabled friendly-recovery.service                  enabled [email protected]                            enabled gpu-manager.service                        enabled lightdm.service                            enabled lm-sensors.service                        enabled lvm2-monitor.service                      enabled ModemManager.service                      enabled network-manager.service                    enabled networking.service                        enabled NetworkManager-dispatcher.service          enabled NetworkManager-wait-online.service        enabled NetworkManager.service                    enabled openvpn.service                            enabled pppd-dns.service                          enabled resolvconf.service                        enabled rsyslog.service                            enabled syslog.service                            enabled systemd-timesyncd.service                  enabled thermald.service                          enabled ubiquity.service                          enabled ufw.service                                enabled unattended-upgrades.service                enabled ureadahead.service                        enabled jerry[member=2]Jerry[/member]-VirtualBox:~$

Stop a service (needs both the stop and disable flag)
eg. If you don't have or need Bluetooth:

Code:
sudo systemctl stop bluetooth.service sudo systemctl disable bluetooth.service

Confirm the service has been stopped:

Code:
jerry[member=2]Jerry[/member]-VirtualBox:~$ systemctl status bluetooth.service ● bluetooth.service - Bluetooth service   Loaded: loaded (/lib/systemd/system/bluetooth.service; disabled; vendor preset: enabled)   Active: inactive (dead)     Docs: man:bluetoothd( May 19 21:33:04 jerry-VirtualBox systemd[1]: Stopped Bluetooth service. jerry[member=2]Jerry[/member]-VirtualBox:~$

A disabled service can be started by another service. If you really want it dead, without uninstalling it, then you can mask it to prevent it from starting under any circumstances:

Code:
jerry[member=2]Jerry[/member]-VirtualBox:~$ sudo systemctl mask bluetooth.service Created symlink from /etc/systemd/system/bluetooth.service to /dev/null. jerry[member=2]Jerry[/member]-VirtualBox:~$

Generate a list of all services:

Code:
jerry[member=2]Jerry[/member]-VirtualBox:~$ systemctl list-unit-files --type=service UNIT FILE                                  STATE  accounts-daemon.service                    enabled acpid.service                              disabled alsa-restore.service                      static  alsa-state.service                        static  alsa-utils.service                        masked  apt-daily.service                          static  [email protected]                            enabled avahi-daemon.service                      enabled bluetooth.service                          masked  bootlogd.service                          masked  bootlogs.service                          masked  bootmisc.service                          masked  casper.service                            enabled cgmanager.service                          enabled cgproxy.service                            enabled checkfs.service                            masked  checkroot-bootclean.service                masked  checkroot.service                          masked  colord.service                            static  console-getty.service                      disabled console-kit-daemon.service                disabled console-kit-log-system-restart.service    static  console-kit-log-system-start.service      static  console-kit-log-system-stop.service        static  console-setup.service                      static  console-shell.service                      disabled [email protected]                  static  cron.service                              enabled cryptdisks-early.service                  masked  cryptdisks.service                        masked  cups-browsed.service                      enabled cups.service                              enabled dbus-org.freedesktop.Avahi.service        enabled dbus-org.freedesktop.hostname1.service    static  dbus-org.freedesktop.locale1.service      static  dbus-org.freedesktop.login1.service        static  dbus-org.freedesktop.ModemManager1.service enabled dbus-org.freedesktop.network1.service      disabled dbus-org.freedesktop.nm-dispatcher.service enabled dbus-org.freedesktop.resolve1.service      disabled dbus-org.freedesktop.thermald.service      enabled dbus-org.freedesktop.timedate1.service    static  dbus.service                              static  debug-shell.service                        disabled display-manager.service                    enabled dm-event.service                          disabled dns-clean.service                          enabled emergency.service                          static  friendly-recovery.service                  enabled fuse.service                              masked  getty-static.service                      static  [email protected]                            enabled gpu-manager.service                        enabled halt.service                              masked  hostname.service                          masked  hwclock.service                            masked  [email protected]                              static  initrd-cleanup.service                    static  initrd-parse-etc.service                  static  initrd-switch-root.service                static  initrd-udevadm-cleanup-db.service          static  killprocs.service                          masked  kmod-static-nodes.service                  static  kmod.service                              static  lightdm.service                            enabled lm-sensors.service                        enabled lvm2-lvmetad.service                      disabled lvm2-lvmpolld.service                      disabled lvm2-monitor.service                      enabled [email protected]                      static  lvm2.service                              masked  ModemManager.service                      enabled module-init-tools.service                  static  motd.service                              masked  mountall-bootclean.service                masked  mountall.service                          masked  mountdevsubfs.service                      masked  mountkernfs.service                        masked  mountnfs-bootclean.service                masked  mountnfs.service                          masked  network-manager.service                    enabled networking.service                        enabled NetworkManager-dispatcher.service          enabled NetworkManager-wait-online.service        enabled NetworkManager.service                    enabled openvpn.service                            enabled [email protected]                          disabled plymouth-halt.service                      static  plymouth-kexec.service                    static  plymouth-log.service                      static  plymouth-poweroff.service                  static  plymouth-quit-wait.service                static  plymouth-quit.service                      static  plymouth-read-write.service                static  plymouth-reboot.service                    static  plymouth-start.service                    static  plymouth-switch-root.service              static  plymouth.service                          static  polkitd.service                            static  pppd-dns.service                          enabled procps.service                            static  quotaon.service                            static  rc-local.service                          static  rc.local.service                          static  rc.service                                masked  rcS.service                                masked  reboot.service                            masked  rescue.service                            static  resolvconf.service                        enabled rmnologin.service                          masked  rsync.service                              disabled rsyslog.service                            enabled rtkit-daemon.service                      disabled samba.service                              masked  saned.service                              masked  [email protected]                            indirect sendsigs.service                          masked  [email protected]                      disabled sigpwr-container-shutdown.service          static  single.service                            masked  stop-bootlogd-single.service              masked  stop-bootlogd.service                      masked  syslog.service                            enabled systemd-ask-password-console.service      static  systemd-ask-password-plymouth.service      static  systemd-ask-password-wall.service          static  [email protected]                static  systemd-binfmt.service                    static  systemd-bootchart.service                  disabled systemd-bus-proxyd.service                static  systemd-exit.service                      static  systemd-fsck-root.service                  static  [email protected]                      static  systemd-fsckd.service                      static  systemd-halt.service                      static  [email protected]          static  systemd-hibernate.service                  static  systemd-hostnamed.service                  static  systemd-hwdb-update.service                static  systemd-hybrid-sleep.service              static  systemd-initctl.service                    static  systemd-journal-flush.service              static  systemd-journald.service                  static  systemd-kexec.service                      static  systemd-localed.service                    static  systemd-logind.service                    static  systemd-machine-id-commit.service          static  systemd-modules-load.service              static  systemd-networkd-resolvconf-update.service static  systemd-networkd-wait-online.service      disabled systemd-networkd.service                  disabled systemd-poweroff.service                  static  systemd-quotacheck.service                static  systemd-random-seed.service                static  systemd-reboot.service                    static  systemd-remount-fs.service                static  systemd-resolved.service                  disabled systemd-rfkill.service                    static  systemd-suspend.service                    static  systemd-sysctl.service                    static  systemd-timedated.service                  static  systemd-timesyncd.service                  enabled systemd-tmpfiles-clean.service            static  systemd-tmpfiles-setup-dev.service        static  systemd-tmpfiles-setup.service            static  systemd-udev-settle.service                static  systemd-udev-trigger.service              static  systemd-udevd.service                      static  systemd-update-utmp-runlevel.service      static  systemd-update-utmp.service                static  systemd-user-sessions.service              static  thermald.service                          enabled ubiquity.service                          enabled [email protected]            static  udev.service                              static  udisks2.service                            disabled ufw.service                                enabled umountfs.service                          masked  umountnfs.service                          masked  umountroot.service                        masked  unattended-upgrades.service                enabled upower.service                            disabled urandom.service                            static  ureadahead-stop.service                    static  ureadahead.service                        enabled [email protected]                    static  usbmuxd.service                            static  [email protected]                              static  uuidd.service                              indirect [email protected]                static  wpa_supplicant.service                    disabled x11-common.service                        masked  192 unit files listed.

Poweroff:

Code:
sudo systemctl poweroff

Restart:

Code:
sudo systemctl reboot

Creating a very basic systemd service file:

Code:
sudo touch /lib/systemd/system/myservicename.service

Code:
sudo nano /lib/systemd/system/myservicename.service

Code:
[Unit] Description=A brief description of my application # Wants - other service required to run this service Wants=network.target # After - start my service after this service After=network.target [Service] User=jerry RemainAfterExit=yes ExecStart=/usr/bin/myapplication Restart=on-failure [Install] WantedBy=multi-user.target

Start the service.

Code:
sudo systemctl daemon-reload

Code:
sudo systemctl start myservicename.service

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Jerry Bezencon
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"Do not correct a fool, or he will hate you; correct a wise man and he will appreciate you."

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#2

Tip - using a static IP should improve your boot time. If you use DHCP, it takes longer to boot as your machine has to be assigned an IP address.

Download your free copy of Linux Lite today.

Jerry Bezencon
Linux Lite Creator

"Do not correct a fool, or he will hate you; correct a wise man and he will appreciate you."

[Image: X5qGkCg.png]

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#3

@Jerry
You must be telepathic Smile
I was reading up on systemd about the stopping/starting services.
I used to have my XP set-ups fine tuned to only run absolute minimal services.
nice summary

Upgrades WIP 2.6 to 2.8 - (6 X 2.6 to 2.8 completed on: 20/02/16 All O.K )
Linux Lite 3.0 Humming on a ASRock N3070 Mobo ~ btrfs RAID 10 Install on 4 Disks Smile

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#4

I used to disable many services on Windows too. Now I'm looking for some easy to use software that lists all the services and allows you to enable/disable/mask them. If anyone finds some software, please let me know.

Download your free copy of Linux Lite today.

Jerry Bezencon
Linux Lite Creator

"Do not correct a fool, or he will hate you; correct a wise man and he will appreciate you."

[Image: X5qGkCg.png]

[Image: 0op1GNe.png] [Image: LgJ2mtP.png] [Image: vLZcFUE.png] [Image: lrUHro3.jpg]
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#5

Is this what you mean.?
[Image: BSzW1pW.png]

Code:
sudo apt-get install bum


Not quite the same.?
But you can also get to see "possible hidden" Startup applications by running:
Code:
sudo sed -i 's/NoDisplay=true/NoDisplay=false/g' /etc/xdg/autostart/*.desktop


[Image: O2eJMcd.png]


I don't really need to tell you... But
All need using with caution...!!!

Upgrades WIP 2.6 to 2.8 - (6 X 2.6 to 2.8 completed on: 20/02/16 All O.K )
Linux Lite 3.0 Humming on a ASRock N3070 Mobo ~ btrfs RAID 10 Install on 4 Disks Smile

Computers Early days:
ZX Spectrum(1982) , HP-150 MS-DOS(1983) , Amstrad CPC464(1984) ,  BBC Micro B+64(1985) , My First PC HP-Vectra(1987)
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#6

Thanks Dave. I found one. Google systemd-ui.

Sent from my phone using Tapatalk


Download your free copy of Linux Lite today.

Jerry Bezencon
Linux Lite Creator

"Do not correct a fool, or he will hate you; correct a wise man and he will appreciate you."

[Image: X5qGkCg.png]

[Image: 0op1GNe.png] [Image: LgJ2mtP.png] [Image: vLZcFUE.png] [Image: lrUHro3.jpg]
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#7

Looks good... book marked

Upgrades WIP 2.6 to 2.8 - (6 X 2.6 to 2.8 completed on: 20/02/16 All O.K )
Linux Lite 3.0 Humming on a ASRock N3070 Mobo ~ btrfs RAID 10 Install on 4 Disks Smile

Computers Early days:
ZX Spectrum(1982) , HP-150 MS-DOS(1983) , Amstrad CPC464(1984) ,  BBC Micro B+64(1985) , My First PC HP-Vectra(1987)
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#8

(05-19-2016, 03:37 PM)Jerry link Wrote:  I found one. Google systemd-ui.
You mean this: https://launchpad.net/ubuntu/+source/systemd-ui?
And this: https://packages.debian.org/nl/jessie/systemd-ui?

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I don't need Google, my wife knows everything!

My Linux website
Reply
#9

Yes.

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Jerry Bezencon
Linux Lite Creator

"Do not correct a fool, or he will hate you; correct a wise man and he will appreciate you."

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#10

(05-19-2016, 03:37 PM)Jerry link Wrote:  Thanks Dave. I found one. Google systemd-ui.

Sent from my phone using Tapatalk

How do you install it?
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