Arch Linux

BelowZero

Member

Registered: 2018-03-13

Posts: 59

Reducing Firmware Boot Up TIme

I'm trying to reduce the boot up time of my system as much as possible.  I've been reading about it here: https://wiki.archlinux.org/index.php/Im … ot_process

For my system, the slowest part is the firmware (for those new to this, run systemd-analyze). 

Startup finished in 25.530s (firmware) + 1.496s (loader) + 1.060s (kernel) + 2.099s (userspace) = 30.186s
graphical.target reached after 1.386s in userspace

What exactly is the firmware phase of the boot up, and how does one go about reducing this time?

Update: I did find this, but I'm open to other ideas: https://bbs.archlinux.org/viewtopic.php?id=181188

Last edited by BelowZero (2018-06-29 13:59:19)

loqs

Member

Registered: 2014-03-06

Posts: 17,323

Re: Reducing Firmware Boot Up TIme

It is the amount of time the firmware reported as taking before the loader started https://github.com/systemd/systemd/blob … amps.c#L22

lo1

Member

Registered: 2017-09-25

Posts: 584

Re: Reducing Firmware Boot Up TIme

Would be good to know your setup and how you configured the bootloader/UEFI. 25s spent without even calling the kernel seems a lot to me.

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cirrus9

Member

Registered: 2016-04-15

Posts: 49

Re: Reducing Firmware Boot Up TIme

Would be good to know your setup and how you configured the bootloader/UEFI. 25s spent without even calling the kernel seems a lot to me.

This. What type of drive are you booting from, and what boot loader are you using?

I get about what you are getting with systemd boot. However, when I boot directly from efistub I get this:

  systemd-analyze
Startup finished in 1.943s (kernel) + 1.381s (userspace) = 3.325s
graphical.target reached after 1.380s in userspace 

I do boot from an SSD drive. Interestingly, I do not notice a 20 second difference in the time to GUI between systemd boot, and efistub boot. There is a bit of difference, but not nearly the amount shown
by systemd-analyze, which is nearly 20 seconds.

Last edited by cirrus9 (2018-07-01 02:24:09)

BelowZero

Member

Registered: 2018-03-13

Posts: 59

Re: Reducing Firmware Boot Up TIme

I'm using an SSD, and GRUB.  I hadn't considered trying another boot loader.  Isn't the "loader" mentioned in these results the boot loader?  I may swap that out next and see if there is any improvement.  I was able to go into the Dell BIOS and turn off a few items (which are not necessary for my configuration), and that cut a few seconds off my time.  This is the latest set of results:

Startup finished in 20.500s (firmware) + 1.454s (loader) + 1.015s (kernel) + 1.759s (userspace) = 24.730s
graphical.target reached after 1.402s in userspace

anuj62176

Member

From: India

Registered: 2018-06-18

Posts: 3

Re: Reducing Firmware Boot Up TIme

I reduced it from 10s to 2s by doing following:
1. Enable fastboot in BIOS.
2. https://wiki.archlinux.org/index.php/GR … workaround
It worked only if both are done.