[systemd-devel] Help needed for optimizing my boot time

[Andrei Borzenkov]

On Thu, Jun 11, 2015 at 2:26 PM, Francis Moreau <francis.moro at gmail.com> wrote:
>>>
>>>    $ systemd-analyze critical-chain
>>>
>>>    graphical.target @7.921s
>>>      multi-user.target @7.921s
>>>        autofs.service @7.787s +132ms
>>>          network-online.target @7.786s
>>>            network.target @7.786s
>>>              NetworkManager.service @675ms +184ms
>>>                basic.target @674ms
>>>                  ...
>>>
...
>> Is NetworkManager-wait-online.service enabled and active?
>>
>
> It seems it's enabled but no more active:
>
> $ systemctl status NetworkManager-wait-online.service
> ● NetworkManager-wait-online.service - Network Manager Wait Online
>    Loaded: loaded
> (/usr/lib/systemd/system/NetworkManager-wait-online.service; disabled;
> vendor preset: disabled)
>    Active: inactive (dead) since Thu 2015-06-11 11:54:37 CEST; 1h 4min ago
>   Process: 583 ExecStart=/usr/bin/nm-online -s -q --timeout=30
> (code=exited, status=0/SUCCESS)
>  Main PID: 583 (code=exited, status=0/SUCCESS)
>
> Jun 11 11:54:30 cyclone systemd[1]: Starting Network Manager Wait Online...
> Jun 11 11:54:37 cyclone systemd[1]: Started Network Manager Wait Online.
>
> This seems correct to me, doesn't it ?
>

Actually it says "disabled" which makes me wonder why it run. But this
is the service that is likely responsible for long time you observe.
If disabling it does ot help, you can try masking it (systemctl mask)
for a test.

OTOH "disabled" here just means links in [Install] section are not
present. Could you show

sysmectl show NetworkManager-wait-online.service -p WantedBy -p RequiredBy