# Fast boot to python script without networking?

**URL:** https://dietpi.com/forum/t/fast-boot-to-python-script-without-networking/1167
**Category:** General Discussion
**Created:** [3 April 2017 04:21 UTC](https://dietpi.com/forum/t/fast-boot-to-python-script-without-networking/1167 "2017-04-03T04:21:35Z")
**Posts on this page:** 1
**Showing post:** 1

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### Author: ![NJS](https://dietpi.com/forum/letter_avatar_proxy/v4/letter/n/f9ae1b/32.png) [@NJS](https://dietpi.com/forum/u/NJS)
#### Post date: [3 April 2017 04:21 UTC](https://dietpi.com/forum/t/fast-boot-to-python-script-without-networking/1167/1 "2017-04-03T04:21:35Z")

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Hello,

I apologize in advance for my kindergarten-level working knowledge of Linux.

I am developing a wildlife camera based on Pi Zero. To conserve battery power the Pi will remain powered down until an Arduino supervisor ([http://spellfoundry.com/product/sleepy-pi-2/](http://spellfoundry.com/product/sleepy-pi-2/)) detects motion via a passive infrared sensor. Once motion is detected it is _critical_ to get the Pi booted up and running my python camera script ASAP to capture the pictures.

I am not too keen on learning buildroot to try create my own custom fast-boot os image and DietPi seems to have GREAT potential as a lightweight customizable platform for my application, but it still takes ~19 seconds to boot (see systemd-analyze critical-chain output below). I would still like to cut that in half or better and would really appreciate any suggestions for how to improve it!

Removing networking is one obvious optimization as it takes 3+ seconds (even with static IP) and is not needed to take a picture. Moreover, I specifically want to keep WLAN powered down to save battery except for one specific scheduled time per day when it will wake-up and “phone home” to Google Drive. How can I do this?

What about dietpi-boot, ramdisk and/or dev-mmcblk0p1 services, which together total over 13 secs? Can these be sped up in any way? FWIW, I am already using a very fast SD card.

Anything further that can be done with overclocking (there only seems to be one profile available for Pi Zero)?

Thanks!

```nohighlight
systemd-analyze critical-chain:

graphical.target @18.846s
└─multi-user.target @18.838s
  └─getty.target @18.836s
    └─getty@tty1.service @18.828s
      └─rc-local.service @18.792s
        └─[1;31mdietpi-boot.service @13.924s +4.847s[0m
          └─[1;31mdietpi-ramdisk.service @11.396s +2.414s[0m
            └─basic.target @11.367s
              └─timers.target @11.339s
                └─systemd-tmpfiles-clean.timer @11.339s
                  └─sysinit.target @11.272s
                    └─[1;31mnetworking.service @7.974s +3.216s[0m
                      └─local-fs.target @7.718s
                        └─[1;31mboot.mount @7.525s +152ms[0m
                          └─[1;31msystemd-fsck@dev-mmcblk0p1.service @6.344s +570ms[0m
                            └─dev-mmcblk0p1.device @6.241s

```

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