Re: [gentoo-user] systemd

[Joost Roeleveld <joost@antarean.org>]

On Tuesday, August 23, 2011 10:30:38 AM Stefan G. Weichinger wrote:
> Am 2011-08-23 08:27, schrieb Joost Roeleveld:
> > On Monday, August 22, 2011 11:09:02 PM Stefan G. Weichinger wrote:
> >> Am 22.08.2011 20:29, schrieb Stefan G. Weichinger:
> > I don't tend to use preload. Is it usefull in a non-systemd
> > environment?
> 
> I always had the impression that things started faster with preload,
> yes. Might be less of an impact with the new SSD I have in my desktop
> machine now.
> 
> I didn't really miss it when switching to systemd (where I don't have a
> service-file for it yet).

Guess it doesn't have much of an improvement anymore? :)

> >> http://en.gentoo-wiki.com/wiki/Improve_responsiveness_with_cgroups
> >> 
> >> Is that stuff still valid?
> > 
> > Maybe, if you want to group stuff you're running yourself into
> > seperate groups. The different services are grouped already.
> > 
> >> With systemd the whole use of cgroups changes fundamentally, I
> >> don't have the knowledge to decide if to use both in parallel.
> >> 
> >> For now I disabled the stuff from the wiki (stop sourcing
> >> /etc/bash/local/cgrouprc) as it only gives me warnings ...
> > 
> > What kind of warnings? Systemd already mounts the filesystem for it
> > and starts poulating it. If your script does similar things, they
> > might try to duplicate work?
> 
> The code tries to write to its own dir:
> 
> mkdir -p -m 0700 $cdir/user/$$ > /dev/null 2>&1
> /bin/echo $$ > $cdir/user/$$/tasks
> /bin/echo '1' > $cdir/user/$$/notify_on_release
> 
> But somehow the mkdir seems to fail as I get warnings from the two
> echo-statements, that their "target-files" do not exist, which lead me
> to the fact that $cdir/user/$$ does not exist.

You could try adding ls-statements to see if it can set that op?
Or try to run those commands.

Where is $cdir pointing to?

> > I think it is more useful on desktops and laptops, which get rebooted
> > 
> >  regularly. On a server that tends to run for months without a
> > 
> > reboot, a fast init-system is important.
> 
> You mean, "not so important" ?

Yes, that's what I meant :)

> > And I don't really see the point of D-BUS on a server either. All the
> > services that need to talk to each other already have working
> > communication paths.
> > 
> > I do intend to implement it on my desktop and netbook as I'd like to
> > have those booting as fast as possible.
> 
> Yep, I agree.
> Stefan