Improving boot speed of Raspberry Pi (Jessie)

A quick note for myself:

Raspberry Pi hangs on “a start job is running for lsb no limit” – this is the network interface manager trying to start up its connections. If you have interfaces listed in /etc/networking/interfaces which do not exist, you might see a timeout or delay here.

Solution: create a new file (and possibly folder if needed) in /etc/systemd/system/networking.service.d/reduce-timeout.conf

[Service]
TimeoutStartSec=5

This will drastically reduce the starting timeout for interfaces. I haven’t tested in detail, but it looks like new interfaces will still load normally after boot.

Worth noting that systemd first looks in /lib/systemd/ forĀ various default configs, then looks in /etc/systemd/ for additional configs, before merging them all. The exact chain of configs as applied can be seen by runningĀ systemctl status networking.service

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