[systemd-devel] Exploring Minimal Systemd in Initramfs for Faster Boot

[Dharma.B at microchip.com]

Hi Serenissi,

On 24/09/24 2:58 pm, serenissi wrote:
> du -sh /usr/lib/systemd/
> 13M     /usr/lib/systemd/
> 
> du -sh /usr/lib64/systemd
> 6.4M    /usr/lib64/systemd
> 
> i.e. about 20M with most stuffs of systemd package installed. Is it too 
> large for initrd? Idk about your setup, might be embedded flash..

The objective is to accelerate the launch of the egt-launcher by 
incorporating a minimal version of systemd within the initramfs. The 
idea is to have systemd initiate essential services, specifically the 
egt-launcher, as early as possible. Given the size constraints of the 
initramfs, only the core binaries would reside in it, while the larger 
dependencies, including libraries for egt, would remain in the root 
filesystem.

I’m considering whether this minimal systemd could track these services 
and continue managing them seamlessly after transitioning to the main 
rootfs. Is this approach feasible within the current systemd framework, 
or are there alternative strategies we could pursue for this use case?

-- 
With Best Regards,
Dharma B.