Are my services overlapping?

nicolasdanelon · 2016-05-26 14:10:15

Hello all, I got all this services enabled. A lot of them are related to network... but who can I know if this services are overlapping or not?

$ systemctl list-unit-files --type=service | grep enabled
autovt@.service                             enabled 
bluetooth.service                           enabled 
cups-browsed.service                        enabled 
dbus-org.bluez.service                      enabled 
dbus-org.freedesktop.network1.service       enabled 
dbus-org.freedesktop.NetworkManager.service enabled 
dbus-org.freedesktop.nm-dispatcher.service  enabled 
display-manager.service                     enabled 
docker.service                              enabled 
gdm.service                                 enabled 
getty@.service                              enabled 
lm_sensors.service                          enabled 
NetworkManager-dispatcher.service           enabled 
NetworkManager.service                      enabled 
systemd-networkd.service                    enabled

ewaller · 2016-05-26 14:28:41

Yes.
systemd-networkd and NetworkManager services will fight with each other

nicolasdanelon · 2016-05-26 14:57:34

thanks for the reply @ewaller . How can I know which should I remove?

V1del · 2016-05-26 15:00:30

Which one are you using? NetworkManager provides integration with various applets so if you want to use its applets in GNOME or whatever DE you are using you likely want to disable systemd-networkd

nicolasdanelon · 2016-05-26 15:02:08

Yeah, I'm with gnome right now.. so, systemctl disable systemd-networkd, thanks bro!

ewaller · 2016-05-26 15:35:20

That is up to you. My guess is that you will want to use NetworkManager. It seems to be the one that most of the major desktop environments like (Xfce4, KDE, Gnome). It handles most things well, but I don't care for it.

I use systemd-networkd.service (Looks for networks to which to attach and configure) along with dhcpcd.service (Obtains addresses on networks as they come up) and wpa_suplicant@.service (To manage wireless association) to control my networks and use wpa_cli and wpa_gui user space tools to control things.

NetworkManager also manages all these things pretty well, but invokes them when it needs them, and not as a systemd service but rather it spawns them itself.

Last edited by ewaller (2016-05-26 15:36:48)

nicolasdanelon · 2016-05-26 15:40:15

@ewaller do you have a blog entry with that information? sometimes wiki is not enough. That is the answer that I need to see the big picture, thanks!
ps: After disable systemd-networkd everything works great look my systemd-analize:
before
Startup finished in 1.824s (kernel) + 1.799s (userspace) = 3.623s
after
Startup finished in 1.814s (kernel) + 691ms (userspace) = 2.505s

ewaller · 2016-05-26 15:50:53

nicolasdanelon wrote:

@ewaller do you have a blog entry with that information? sometimes wiki is not enough.

No blog, just this wiki article

Head_on_a_Stick · 2016-05-26 20:15:31

nicolasdanelon wrote:

docker.service                              enabled 
[...]
systemd-networkd.service                    enabled

Are you using systemd-networkd for your docker containers?

I think it is possible for NetworkManager and systemd-networkd to co-exist provided they are not both attempting to manage the same interface.

ewaller wrote:

I use systemd-networkd.service [...] along with dhcpcd.service

Did you know that systemd-networkd has it's own built-in dhcp client?

For my wireless & wired connections I have just systemd-networkd and wpa_supplicant enabled with the dhcp route metric set to prefer the wired connection automatically

https://wiki.archlinux.org/index.php/sy … me_machine

Last edited by Head_on_a_Stick (2016-05-26 20:17:27)

ewaller · 2016-05-26 20:39:03

Head_on_a_Stick wrote:

Did you know that systemd-networkd has it's own built-in dhcp client?

No, I didn't. I'll check that out.

For my wireless & wired connections I have just systemd-networkd and wpa_supplicant enabled with the dhcp route metric set to prefer the wired connection automatically

That is the part I like the best. Even though my home WiFi is 'N', I love that I can start a download, walk over to my router and plug into it, watch speeds jump to 100Mb/s, and when done, disconnect and fall back to N speeds again.

Edit: I guess I did know that systemd-networkd has its own dhcp client. It turns out I did not have dhcpcd.service enabled.

Last edited by ewaller (2016-05-28 15:00:48)

Arch Linux

#1 2016-05-26 14:10:15

Are my services overlapping?

#2 2016-05-26 14:28:41

Re: Are my services overlapping?

#3 2016-05-26 14:57:34

Re: Are my services overlapping?

#4 2016-05-26 15:00:30

Re: Are my services overlapping?

#5 2016-05-26 15:02:08

Re: Are my services overlapping?

#6 2016-05-26 15:35:20

Re: Are my services overlapping?

#7 2016-05-26 15:40:15

Re: Are my services overlapping?

#8 2016-05-26 15:50:53

Re: Are my services overlapping?

#9 2016-05-26 20:15:31

Re: Are my services overlapping?

#10 2016-05-26 20:39:03

Re: Are my services overlapping?

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