Decreasing the boot time

In this post, we are going to guide you to increase your system performance.

To reduce the system boot time, you are may follow the 3 simple steps below.

1. You should analyze well which services you will disable here, otherwise, your system may be negatively affected. First, let's check how long your system has booted with the systemd-analyze command. This command shows you how long each service will open.

root@antmedia:~# systemd-analyze Startup finished in 7.741s (kernel) + 26.704s (userspace) = 34.446s graphical.target reached after 7.381s in userspace

 Our system was opened in a total of 34.4 seconds. Let's check out why userspace takes so long. You are able to use the following command for this.

systemd-analyze blame

11.041s apt-daily.service 6.842s apt-daily-upgrade.service 2.484s cloud-init-local.service 1.610s cloud-init.service 1.096s systemd-networkd-wait-online.service 1.027s motd-news.service 865ms cloud-config.service 668ms snapd.service 650ms dev-sda1.device 580ms fstrim.service 560ms cloud-final.service 539ms networkd-dispatcher.service 511ms lxd-containers.service 382ms systemd-timesyncd.service 321ms accounts-daemon.service 170ms grub-common.service 161ms keyboard-setup.service 156ms systemd-modules-load.service 147ms polkit.service 136ms systemd-journald.service 135ms systemd-resolved.service 129ms snapd.apparmor.service 121ms apparmor.service 120ms systemd-udev-trigger.service 114ms ssh.service

You are able to disable the services you didn't use according to the output above.

For instance, I disable the following services on a server where I don't use cloud structure.

sudo systemctl disable apt-daily.service sudo systemctl disable apt-daily.timer sudo touch /etc/cloud/cloud-init.disabled sudo systemctl disable motd-news

 The result is below.

root@antmedia:~# systemd-analyze Startup finished in 7.672s (kernel) + 2.252s (userspace) = 9.925s graphical.target reached after 2.242s in userspace

 2. By default, your system grub gives you a time of 10 seconds to select between operating systems on a dual boot system.

Edit the following line.

vim /etc/default/grub

 Change the GRUB_TIMEOUT line as follows.

GRUB_TIMEOUT=0

Then run the following command.

upgrade-grub2

 3. If you really need as much performance as possible, you can do one of two things: Use a GUI-less server installation or run the server in run level 3.

sudo systemctl set-default multi-user.target