lubuntu-desktop team mailing list archive

[Phillip Whiteside <phillw@xxxxxxxxxx>]

Hi Brian,

I know that job priorities can be altered, hopefully the below is of help to
you.

Regards,

Phill.
Kernel decides how much processor time is required for a process based on
the nice value. Possible nice value range is: -20 to 20. A process that has
a
nice value of -20 is very high priority. The process that has a nice value
of 20
is very low priority.

*$ ps axl*
Use ps axl to display the nice value of all running process.
F   UID   PID  PPID PRI  *NI*    VSZ   RSS WCHAN  STAT TTY        TIME COMMAND
4     0     1     0  20   0   2100   724 -      Ss   ?          0:06 init [2]
5     0     2     0  15  -5      0     0 -      S<   ?          0:00 [kthreadd]
1     0    47     2  15  -5      0     0 -      S<   ?          0:00 [kacpid]
1     0    48     2  15  -5      0     0 -      S<   ?          0:00
[kacpi_notify]
1     0   125     2  15  -5      0     0 -      S<   ?          0:00 [kseriod]
1     0   166     2  20   0      0     0 -      S    ?          0:00
[pdflush][Note: 6th column 'NI' is the nice.]

To increase the priority, give a lower nice value as shown below. However,
only root can increase the priority of a running process, else you’ll get
error messages.

*$ ps axl | grep test.sh*
1     0    12345     2  15  10      0     0 -      S<   ?     0:00
test.sh[Note: 6th column with value 10 is the nice value for the
shell-script.]

Now decrease the nice value to increase the priority of the process. Use the
PID of the process.

*$ su -
# renice -5 -p 12345*

*$ ps axl | grep test.sh*

1     0    12345     2  15  -5      0     0 -      S<   ?     0:00
test.sh[ Note: The 6th column now shows a lower nice value of -5
(increased priority)]

On Wed, Aug 11, 2010 at 1:11 AM, Brian Redfern <brianwredfern@xxxxxxxxx>wrote:

> I wonder if optimal audio performance gets in the way of other desktop
> features? By installing the stock ubuntu rt kernel and rtirq and
> turning off automatic cpu frequency scaling I get absolutely amazing
> low latency audio performance on lubuntu. Seems like audio is low on
> the priority list, but I'm writing an article for the Csound Journal
> about how to slightly modify lubuntu for insanely great audio
> performance.
>
> On Tue, Aug 10, 2010 at 4:46 PM, Phillip Whiteside <phillw@xxxxxxxxxx>
> wrote:
> > Hi,
> > As a fan of the Google summer of Code projects, are there any objections
> to
> > this being put in
> https://wiki.ubuntu.com/Lubuntu/DocumentationHelp#Expert
> > users  ? It's still to have an entry :)
> > I think it would be an interesting one for "Experts" to have a look at,
> and
> > may even provide a tool for seeing what processes can be done away with
> > under lubuntu.
> > Regards,
> > Phill.
> > P.S., a note to any one deciding to try it by
> > ppa https://wiki.ubuntu.com/Lubuntu/Developers#ppa-purge  It's worth
> having
> > on your system for when 'bad' things happen to 'good' ppa's.
> > ---------- Forwarded message ----------
> > From: Jacob Peddicord <jpeddicord@xxxxxxxxxx>
> > Date: Wed, Aug 11, 2010 at 12:33 AM
> > Subject: Call for testing: jobs-admin
> > To: ubuntu-qa@xxxxxxxxxxxxxxxx, ubuntu-users@xxxxxxxxxxxxxxxx,
> > ubuntu-devel-discuss@xxxxxxxxxxxxxxxx
> >
> >
> > Hello all,
> >
> > Google Summer of Code ends this week, which indirectly means that
> > jobs-admin is now ready for testing! Interested testers need only to
> > add a PPA and install a package to begin. Within a few days the
> > packages will be available in maverick universe.
> >
> >    sudo add-apt-repository ppa:jpeddicord/jobs
> >    sudo apt-get install jobs-admin
> >
> > jobs-admin may then be launched from the terminal, or can be found
> > under System > Administration > System Jobs. We've hidden most
> > jobs/services that are essential to your system, so ideally you
> > shouldn't be able to break anything even if you wanted to. With that
> > in mind, feel free to give it all a stress test. Shut off jobs you
> > don't want, and change the settings of others. By testing this you'll
> > also be testing jobservice, the daemon which powers it all.
> >
> > Bugs can be reported on Launchpad:
> >    http://bugs.launchpad.net/jobsadmin
> >
> > We're also open for translating:
> >
> > * https://translations.launchpad.net/jobsadmin - for most UI elements
> > * https://translations.launchpad.net/jobservice - for job settings
> >
> > Any and all feedback is welcome. We'll have a bugfix release in the
> > next few weeks. I won't be responding to reports or feedback until
> > August 16 (Monday), however.
> >
> > For Maverick, you'll be able to install jobs-admin and have easy
> > access to your system's services. The PPA will be maintained so Lucid
> > users aren't left out. We're hoping to make this the de-facto utility
> > (and framework) for managing services and jobs, and hopefully you'll
> > see this in-place as the replacement for the missed services-admin in
> > 11.04. I'll be working on getting these packages into Debian as well.
> >
> > Thanks for your attention!
> >
> > --
> > Jacob Peddicord
> > http://jacob.peddicord.net/
> > https://launchpad.net/~jpeddicord
> >
> > --
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> >
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