Systemd, which overlay to choose? How well is it performing?

benneque · Tux's lil' helper Joined: 01 Dec 2007 Posts: 134

Note: Please use systemd overlay.

codestation · Posted: Sat Nov 06, 2010 4:30 am Post subject:

Currently using the keruspe overlay, its working fine so far and i am trying to get as many service/socket/target files from other distros to sastify the ones that i was using from /etc/init.d. About the display manager not starting its because the default xdm.service tries to call /etc/init.d/xdm without openrc being initialized. What i did is remove display-manager.service from /lib/systemd/system/graphical.target.wants then using a native approach:

kdm@.service (from archlinux AUR)

benneque · Tux's lil' helper Joined: 01 Dec 2007 Posts: 134

Thanks for the reply

I really hope systemd will hit gentoo ~arch. That would be really an improvement! (And we would get those units and services out of the box, :twisted:

)

It seems to perform really well (except for those missing services). The default installation boots up to console login in 4-5 seconds for me (incl. kernel). openrc needs at least 10.

How about systemd AND s(oder u)readahead? Would it give another small boost, 'cause systemd doesn't optimize the order of read-events?

Ant P. · Watchman Joined: 18 Apr 2009 Posts: 6920

readahead's only use is to move all disk IO to one place; with systemd everything starts as fast as possible, so the disk is already 100% busy. Using it will almost certainly slow you down.

benneque · Tux's lil' helper Joined: 01 Dec 2007 Posts: 134

Update!

As I said I'm using keruspe overlay and now there are the USE-flags of betagarden overlay as well. And there's a dependency for "vala" , don't know why?! are some parts of systemd written in vala?!

However: There's a new "feature"

(!!!)
I call it "Press ctrl + alt + del for reboot". As it says: reboot works on gentoo. And it's incredible fast against openrc! I tested systemd (with standard installation, no additional or deleted services) against openrc 0.6.4 (removed everything possible).

Now I'm still waiting for our common gentoo ebuilds to ship systemd scripts for all those nice programs as NetworkManager, samba, mysql, apache ...... at least I think there's sth. with xdm going on. Systemd tries to start xdm but it won't run (don'T know why, I just saw the error message and didn't go deeper).

trapni · Posted: Fri Dec 03, 2010 4:42 pm Post subject:

benneque · Tux's lil' helper Joined: 01 Dec 2007 Posts: 134

Hi everyone!

Since a few days I use the systemd-overlay. Works pretty well!
The only problem is: There's no service for kdm (or xdm ...). I think I saw something like "kdm@" while installing systemd a few days ago, but today there's no such thing.
Was it broken?!

Another issue (or maybe just ugly output) is: sth. like "automounter not found: no such file or directory". It's been said two times at the beginning, but the rest of the process does its job well.

Any information/help?
Thanks

trapni · Posted: Mon Dec 06, 2010 7:46 pm Post subject:

http://git.overlays.gentoo.org/gitweb/?p=user/systemd.git;a=tree;f=sys-apps/systemd-units/files/services-desktop;hb=HEAD

there is still a kdm@.service.

you need to `systemctl enable` it to let it be installed into the graphical.target.wants section, then everything should go fine.

benneque · Tux's lil' helper Joined: 01 Dec 2007 Posts: 134

ah dammit

I looked at "equery f systemd" and not "equery f systemd-units" ... kdm@.service IS there and I can start it with systemctl start kdm@tty7.service
How do I get it "enabled" ? systemctl enable kdm@tty7.service won't work

.. ah ok! systemctl enable kdm@.service works and it automatically to tty7. So it's not possible to SET tty while enabling ?

EDIT: I have several error messages after system start: Most (if not all) concerning kdm
1. Cannot open log file /dev/stdout
2. kdm: klauncher: kdemain: no dbus session-bus found
3. ........ "not connected to dbus-server"

dbus IS started and kdm works, but the messages are there .. !?

trapni · Posted: Mon Dec 06, 2010 11:58 pm Post subject:

benneque · Tux's lil' helper Joined: 01 Dec 2007 Posts: 134

I'm using NetworkManager. This seems to take most start-up time. Annoying .... but: it has at least 50 lines output that are "<info>". Not too interesting. How can I disable this (for me) useless output?

Dr.Willy · Guru Joined: 15 Jul 2007 Posts: 547 Location: NRW, Germany

I installed systemd yesterday and after some tinkering I got it to boot my computer. After some more tinkering I had to reinstall systemd and systemd-units and now it won't boot anymore.
Just after the 'Recreating volatile file systems' it hangs and after a while it says something like 'device-sda2/start timed out'. After that basically everything fails to start (obviously).
dev/sda2 is my swap partition.

Does anyone know what causes this and possibly how get systemd into a working state again?

benneque · Tux's lil' helper Joined: 01 Dec 2007 Posts: 134

Hmmm...

I have actually no problems with systemd (except sometimes panics with IRQ 19 and NetworkManager), but that's not much of interest to me

During the last weeks I reinstalled systemd several times. I don't use any sort of encryption or RAID or sth. So it's a fairly normal system.

I did (nearly) always the following:

emerge -C systemd systemd-units
and afterwards I deleted everything concerning systemd on my filesystem (e.g. /etc/systemd )
Afterwards: emerge systemd

Which version are you using? systemd-15 or 9999 ? I'm using 9999 atm.

And I've got a question, too: What is gtk USE-flag good for?

Dr.Willy · Guru Joined: 15 Jul 2007 Posts: 547 Location: NRW, Germany

soya · Guru Joined: 29 Jan 2004 Posts: 429

Where did you get >=x11-libs/libnotify-0.7.0 ? Thanks

Edit: I was using systemdoverlay which doesn't provide libnotify-0.7, keruspe overlay does.
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ssteinberg · Apprentice Joined: 09 Jul 2010 Posts: 206 Location: Israel

http://gpo.zugaina.org/x11-libs/libnotify

Doesn't 0.7 cause massive breakage? Plenty of packages don't compile against it as I remember.

benneque · Tux's lil' helper Joined: 01 Dec 2007 Posts: 134

I'm using systemd-9999 from systemd overlay and:
[ebuild R ] x11-libs/libnotify-0.4.5 356 kB

No problems no dependency conflicts or whatever. Runs pretty well.

benneque · Tux's lil' helper Joined: 01 Dec 2007 Posts: 134

Is anyone else using NetworkManager and experiencing a crash at shutdown with systemd?
Everytime I shutdown (not reboot!!!) NetworkManager encounters a serious problem and it take at least 1 minute till power off!
Reboot works well (1-2 seconds until I see my BIOS-screen)

soya · Guru Joined: 29 Jan 2004 Posts: 429

I've just installed systemd and configured following Gentoo guide and it appears init=/bin/systemd real_init=/bin/systemd does nothing, openrc starts successfully as always as if systemd is not installed. I'm using a custom builtin kernel initramfs to bootup, could it be the problem? Could it be tat the initramfs init file is ignoring init=/bin/systemd ? Or kernel should take care about it?
Thanks

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soya · Guru Joined: 29 Jan 2004 Posts: 429

Solved modifying my initramfs's init script. There i had a hardcoded real_init=/sbin/init. Then systemd failed to load some necessary modules to mount /home /usr/portage etc but it also didn't seem to be faster than openrc. I mustalso say i didn't apreciate much difference between openrc and baselayout1 init system as i have a really minimal and tuned init+bzImage.
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benneque · Tux's lil' helper Joined: 01 Dec 2007 Posts: 134

That's strange. My systemd boots up to kdm within 15sec incl. avahi and NetworkManager...
With openrc it always took at least 25-30 secs
For a successful boot you need automounter v4 (which is in real v5) and automounted /dev in kernel (as gentoo-wiki hopefully told you

)

soya · Guru Joined: 29 Jan 2004 Posts: 429

I'm currently taking a look to it all, because i'm getting lots of errors using systemd. I could get to tty and successfully login but then a had to start servies manually due to error, i'm getting an automounter error and i havautomounter v4 builtin kernel for "years". Maybe the slownes is due to the errors...
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soya · Guru Joined: 29 Jan 2004 Posts: 429

Right now i'm trying to solve automounter issues. Everything compile with +sysv +systemd and openrc still remains there. I'm on fake raid0 and need lvm service to start to populate /dev/mapper/ Running kernel 2.6.36-r2

benneque · Tux's lil' helper Joined: 01 Dec 2007 Posts: 134

Ah ok. THOSE automounter errors... yeah I get those too, but systemd and my system start and run well!
Maybe your trouble is because of lvm ?! I don't use it, though don't know

The FANOTIFY was part of 2.6.36, but was deleted afterwards because of some trouble. I get this error, too, and have no problems ^^

My installation looks like this:
[ebuild R ] sys-apps/systemd-9999 USE="pam tcpwrap -audit -gtk (-selinux) -sysv" 0 kB [1]

I don't know what tcpwrap is for, but I don't need sysv (or do you because of lvm?)

Maybe you have the possibility to run without you fake raid? Maybe this solves some problems?
Another way could be to install systemd-9999 (that's what I'm using actually)

soya · Guru Joined: 29 Jan 2004 Posts: 429

Hi, thx for the reply. Automountser issues may be due to lvm, i don't know but it's really a pain as was trying to setup systemd with USE="-sysv" and remove openrc. Right now i have systemd-9999 with USE"sysv". I would really need to know why is automounter failing and what's supposed to do as kernel help says it's for automounting remote FS. LVM is a must on my setup as i need it for mounting the rest of the system which is stored on a raid0. I think i'll have to leave systemd till they solve that issues those errors are no normal.
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