Hi, I'm able to shave 7 seconds from initrd udev work by changing systemd-udev-trigger.service udevadm trigger argument from --type=all to --type=devices which is the default also without --type argument. Now initrd boottime on qemu drops from 30 seconds to 23 seconds. In my case this could be ok as default since udev is only to provide HW support and not used to setup more complex SW stacks.
The processing time with --type=subsystems seems like a lot. Kernel and drivers have already initialized and thus I don't really understand why udev is doing so much work and so slowly in userspace. Does anyone have ideas or comments about this? Cheers, -Mikko
