Systemd

Boot Faster

by WM

About me

Use Fedora since Verne 16

a refugee from Ubuntu

@kidwm at your favorites Social Network Websites.

What is systemd?

Systemd is a system and service manager for Linux, compatible with SysV and LSB init scripts.

What is systemd?

Socket-activated and bus-activated services, which sometimes lead to better parallelization of interdependent services.

Why use systemd?

Fedora 15 and later comes with systemd enabled by default.

Why use systemd?

In April 2012, udev's source tree was merged into systemd.

Better than Upstart?

which comes from Ubuntu.

You can't pass it!

Will be integrated with GNOME OS

How to utilize systemd?

sudo systemctl start
sudo systemctl start sshd.service
sudo service sshd start

How to utilize systemd?

sudo systemctl status
sudo systemctl start
sudo systemctl stop
sudo systemctl enable
sudo systemctl disable

Analysis

sudo yum install systemd-analyze

a tool like BootChart graph

sudo systemd-analyze blame

Who's the murderer?

Let's start a blame game!

systemd-analyze plot > before.svg

You'll get a picture in detail.

Optimization

No LVM and No RAID

sudo systemctl mask udev-settle.service
sudo systemctl mask fedora-wait-storage.service
sudo systemctl mask fedora-storage-init.service
sudo systemctl mask fedora-storage-init-late.service

Optimization

More…

sudo systemctl disable sendmail.service
sudo systemctl disable iscsi.service
sudo systemctl disable iscsid.service
sudo systemctl disable lldpad.service
sudo systemctl disable fcoe.service

Optimization

Even more…

sudo systemctl disable livesys.service
sudo systemctl disable livesys-late.service
sudo systemctl disable lvm2-monitor.service
sudo systemctl disable mdmonitor.service
sudo systemctl disable mdmonitor-takeover.service
sudo systemctl disable cryptsetup.service

Optimization

Much more…

sudo systemctl disable avahi-daemon.service
sudo systemctl disable abrtd.service
sudo systemctl disable abrt-ccpp.service
sudo systemctl disable abrt-oops.service
sudo systemctl disable abrt-vmcore.service
sudo systemctl disable abrt-xorg.service

Optimization

Last but not least

sudo systemctl disable firewalld.service

Disable Firewalld

sudo vim /etc/selinux/config

Disable SELinux

Optimization

Modify the GRUB2 timeout

sudo vim /etc/default/grub
GRUB_TIMEOUT=0
sudo grub2-mkconfig -o /boot/grub2/grub.cfg

GTK Interface

sudo yum install systemd-ui
systemadm

Reference

End

Thank you!

by WM