Re: How to prevent rtkit from giving firefox higher priority?
hw <hw@adminart.net> wrote:
> On Tue, 2024-01-16 at 11:27 +0100, Arno Lehmann wrote:
> > I don't know anything about rtkit, but I may be able to parse
> > English :-)
> >
> > Am 16.01.2024 um 10:42 schrieb hw:
> > ...
> > > The messages in the journal are actually weird:
> > >
> > >
> > > rtkit-daemon[132284]: Successfully made thread 145442 of process
> > > 145185 (/usr/lib64/firefox/firefox) owned by '1000' RT at
> > > priority 10.
> > >
> > > rtkit-daemon[132284]: Successfully made thread 2534 of process
> > > 2507 (/usr/bin/gnome-shell) owned by '1000' RT at priority 20.
> > > rtkit-daemon[132284]: Successfully made thread 2534 of process
> > > 2507 (/usr/bin/gnome-shell) owned by '1000' high priority at nice
> > > level 0. rtkit-daemon[132284]: Successfully made thread 2534 of
> > > process 2507 (/usr/bin/gnome-shell) owned by '1000' RT at
> > > priority 20. rtkit-daemon[132284]: Successfully made thread 2534
> > > of process 2507 (/usr/bin/gnome-shell) owned by '1000' high
> > > priority at nice level 0.
> > >
> > >
> > > It says 'made owned by'. Does user 1000 not own the process to
> > > begin with? Which user owned it before? Or what is that
> > > supposed to mean?
> >
> > What it tries to say is probably "made (thread ... owned by 1000)
> > high priority".
>
> It says 'made thread ... (at nice level 0) owned by 1000'. This is
> inconclusive at best: The thread is obviously _at_ some nice level or
> _at_ some priority and was made owned by 1000.
Well no it doesn't. You've changed the order of the words and that
changes the meaning.
> If it had changed the priority it should say that, but it doesn't.
There's a rather unwieldy noun phrase
"thread 2534 of process 2507 (/usr/bin/gnome-shell) owned by '1000'"
which identifies a particular thread. Let's call that THREAD.
Then what the log says is:
rtkit-daemon[132284]: Successfully made THREAD RT at priority 20.
rtkit-daemon[132284]: Successfully made THREAD high priority at nice
level 0.
rtkit-daemon[132284]: Successfully made THREAD RT at priority 20.
rtkit-daemon[132284]: Successfully made THREAD high priority at nice
level 0.
So the log is telling you something about changes to the priority and
real-time nature of that particular THREAD. I've no idea what they
actually mean.
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