[systemd-devel] Process ordering within a 'dependency level'

[Allmeroth, Robert]

Hi,

I tried to optimize my embedded configuration but I stumbled over the following problem:

Let's assume systemd identified 10 processes on 'dependency level 0'. They all can/should be started first/immediately.
Since they cannot be started at the same time - they start sequential with some little delay.

But one of that processes is in the critical chain in the meaning that half of the system depends on it.
So.. that process must be started first (instead of being started at pos 10 of 10) to avoid all the little start delays + data loading of the already started 9 processes.

Is there a way to express / force an ordering of unit files within one dependency level?
Means: I would like to tell systemd the order in which processes have to be started without using a forced wait like 'After' (that causes often idle CPU and I/O)

Best regards
  Robert


ROBERT ALLMEROTH
Harman Automotive Division

Becker-Göring-Straße 16
76307 Karlsbad
Phone: +49 (0) 7248-71-1156
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Email: Robert.Allmeroth at harman.com
Web: www.harman.com