Disabling dietpi-boot service?

General Discussion
12

Hi,

I think, their is a lot of mystic here, about speed-up boot-time.
So I have done same testing on a:

 ───────────────────────────────────────
 DietPi     | 14:58 | Sun 15/10/17
 ───────────────────────────────────────
 V156       | RPi Zero W (armv6l)
 ───────────────────────────────────────

First of all, I think @NJS is using a very old DietPi RPi Zero W image version.

DietPi v156 have after fresh installation out-of-the-box:

root@RPi-Zero_W:~# uname -a
Linux RPi-Zero_W 4.9.52+ #1 Mon Oct 2 21:14:49 UTC 2017 armv6l GNU/Linux

root@RPi-Zero_W:~# dmesg | grep wl0
[    8.017884] brcmfmac: Firmware version = wl0: Aug  7 2017 00:46:29 version 7.45.41.46 (r666254 CY) FWID 01-f8a78378

But let’s start testing with a fresh installed image (DietPi_v150_RPi-armv6-(Jessie).img) on a SanDisk Extreme 32GB microSDHC, Class 10, UHS-3 with default settings, which will be auto-updated to DietPi v156 during first boot-up.
We using a Official Raspberry Pi Power Supply, because it will have a out of 5.2 V with 2.5 A and no significant powerloss on cable (18 AWG) and micro usb plug (only pin 1 and 5 connected)

Settings:

  • Wifi enabled
  • IPv4 addess via DHCP
  • IPv6 enabled
  • Swapfile size : auto (1567 MB)
  • no overclocking or tweaking CPU, RAM, GPU or sd card

171015-0002.gif
171015-0001.gif

root@RPi-Zero_W:~# cat /var/log/boottime
27.17 Seconds

Lets tweak the setting to speed up:

Device Network: IP address

  • Wifi enabled
  • IPv4 static addess
  • IPv6 enabled (leave it enabled, disable will increase boot-up time!)


root@RPi-Zero_W:~# cat /var/log/boottime
20.01 Seconds

Swapfile settings:

  • Swapfile size : 100 MB

171015-0003.gif

root@RPi-Zero_W:~# cat /var/log/boottime
19.60 Seconds

Swapfile disable:

  • Swapfile size : disable (0 MB)


root@RPi-Zero_W:~# cat /var/log/boottime
19.28 Seconds

Tweaking sd card without breaking WiFi:

  • ##—SD-CARD_Overclock------
    dtoverlay=sdtweak,overclock_50=100

171015-0005.gif

root@RPi-Zero_W:~# cat /var/log/boottime
19.18 Seconds

Overclocking CPU, SDRAM, GPU, Voltage :

  • ##----for RPi Zero----
    arm_freq=1050
    gpu_freq=500
    core_freq=500
    sdram_freq=500

sdram_schmoo=0x02000020 (don’t do this!)

over_voltage=2
sdram_over_voltage=2


root@RPi-Zero_W:~# cat /var/log/boottime
18.79 Seconds




27.17 Seconds vs. 18.79 Seconds

  • Static ip-address configuration and swapflie size make the greatest difference in boot-up time.
  • Overclocking and sd card tweak increase the system performace much, but not as much for boot-up time.

And that is it!