Let's say you install a new Debian system using the Jessie release, which will become the next stable release in a few months. And let's say that you would prefer not to be enmeshed in systemd.
However, you can remove it.
# apt-get install sysv-rc sysvinit-core sysvinit-utils # apt-get purge systemd libpam-systemd systemd-sysv # echo udev_log=\"err\" >> /etc/udev/udev.conf # update-initramfs -k all -u # shutdown -r now
For my sample KVM virtual machine, 1 cpu core and 512MB allocated on a reasonably idle i5-2500 desktop:
- boot time on a default install: 1.33s
- boot time on a sysvinit without the udev.conf change: 32.18s
- boot time on a sysvinit with the change: 1.37s