Rock 3C Boot speed

#1

I am considering using Rock 3C for a gauge design but I have read that the boot time is around 30s.
Does anyone know a way of speeding up the boot time? Ideally I would like to get it down to around 2s.

#2

The system startup time is related to the startup medium and the peripheral device, which startup medium you used. btw 2s is very difficult for rock 3c, 20s is a normal time.

1 Like
#3

Play with systemd services. You can see the services which takes much time during boot with the command systemd-analyze blame and systemd-analyze critical-chain. Remove/uninstall services that you don’t need. With this I am able to boot under 3 seconds on Rock 4B+ (on EMMC). On Raspberry Pi 3B+, I was able to get boot time around 7 secs with this procedure.

graphical.target @2.247s
└─multi-user.target @2.247s
  └─getty.target @2.247s
    └─serial-getty@ttyFIQ0.service @2.246s
      └─systemd-user-sessions.service @2.216s +18ms
        └─network.target @2.212s
          └─NetworkManager.service @1.685s +526ms
            └─dbus.service @1.668s
              └─basic.target @1.660s
                └─sockets.target @1.660s
                  └─ssh.socket @1.659s
                    └─sysinit.target @1.642s
                      └─systemd-timesyncd.service @1.447s +194ms
                        └─systemd-tmpfiles-setup.service @1.380s +37ms
                          └─systemd-journal-flush.service @866ms +492ms
                            └─systemd-journald.service @656ms +204ms
                              └─systemd-journald.socket @609ms
                                └─system.slice @332ms
                                  └─-.slice @332ms

Now the most of the time is spent in U-Boot. See my other thread how to reduce the time spent in U-Boot: Long time before ROCK 4 boots
Now only kernel image reading in U-Boot is slower.

2 Likes
#4

Thanks Kolsi, your work on this looks like it will be very useful, thanks for sharing.