Low Latency vs. Real Time Kernel
by Brian Monroe
I've been spending a lot of time on the #opensourcemusicians channel
talking to Ubuntu Studio users about their kernel and latency times they're
getting. Seems like most of them are using g a stock kernel with the
preemptive option enabled and they are getting great latency results
(2ms)while utilizing the @audio group on their user. I ended up compiling
my own low latency kernel and I haven't had any issues with it yet. If this
is what we are missing for the spin I'd be happy to maintain packaging for
the kernel. I know ccrma has been behind a few kernel releases.
I saw the instructions for adding the real time patch for a tick less
kernel and from what I can tell it wouldn't be hard to get that rolling as
well.
I'm not entirely sure what ccrma does differently with their kernels
compared to other Linux users, and I'm still a bit of a noob so I could be
off base with this, but I would reason that we should be able to just
utilize the same settings to archive similar performance enhancements.
I thought I read that ccrma uses a unique scheduler, but if we could get a
2ms latency time without it, the point may be moot.
8 years, 10 months
spin-kickstarts/fedora-jam
by Brendan Jones
spin-kickstarts/fedora-jam/fedora-live-jam-kde.ks | 28 +++++++++++-----------
1 file changed, 15 insertions(+), 13 deletions(-)
New commits:
commit a6f6c8a7a7cd867fffd37d08dc92a406000bec8e
Author: Brendan Jones <brendan.jones.it(a)gmail.com>
Date: Tue Nov 27 08:13:26 2012 +0100
Enable stable packages
diff --git a/spin-kickstarts/fedora-jam/fedora-live-jam-kde.ks b/spin-kickstarts/fedora-jam/fedora-live-jam-kde.ks
index abe09af..4afd295 100644
--- a/spin-kickstarts/fedora-jam/fedora-live-jam-kde.ks
+++ b/spin-kickstarts/fedora-jam/fedora-live-jam-kde.ks
@@ -67,6 +67,7 @@ swami
Add64
synthv1
samplv1
+drumkv1
ams
#guitar
@@ -116,6 +117,9 @@ lv2-zynadd-plugins
lv2dynparam
lv2-abGate
lv2-c++-tools
+lv2-samplv1
+lv2-synthv1
+lv2-drumkv1
slv2
#dssi
@@ -149,7 +153,7 @@ jaaa
jmeters
qastools
arpage
-#realTimeConfigQuickScan
+realTimeConfigQuickScan
#patchage
#ladish #not packaged yet
japa
@@ -160,7 +164,7 @@ idjc
# fedora jam theming (to be customized)
kfaenza-icon-theme
fedora-jam-backgrounds
-#fedora-jam-kde-theme
+fedora-jam-kde-theme
#Misc. Utils
screen
@@ -198,16 +202,14 @@ EOF
# Override fedora-live-kde-base.ks settings
sed -i /etc/rc.d/init.d/livesys -res"#^(FavoriteURLs=).*#\1${JAMFAVORITES}#"
-# Set default theme (to be changed to a customized one)
+# Set default theme
cat >> /etc/skel/.kde/share/config/plasmarc << EOF
[\$Version]
update_info=plasma_popupapplet_fix_groups.upd:PlasmaPopupAppletFixGroups2
[Theme]
-#name=Fedora_Jam
-name=Caledonia
+name=Fedora_Jam
[Theme-plasma-netbook]
-#name=Fedora_Jam-netbook
-name=Spherical_Cow-netbook
+name=Fedora_Jam-netbook
[Icons]
Theme=KFaenza
EOF
@@ -218,12 +220,12 @@ cat >> /etc/skel/.kde/share/config/kdeglobals << EOF
Theme=KFaenza
EOF
-## Set default splash (Awaiting packaging in fedora-jam-kde-theme:)
-#cat >> /etc/skel/.kde/share/config/ksplashrc << EOF
-#[KSplash]
-#Engine=KSplashX
-#Theme=FedoraJam
-#EOF
+## Set default splash
+cat >> /etc/skel/.kde/share/config/ksplashrc << EOF
+[KSplash]
+Engine=KSplashX
+Theme=FedoraJam
+EOF
#add user to jackuser group on boot
10 years, 10 months
Updating the wiki
by Brendan Jones
Hi all,
I've created a page on the wiki for configuring Jack. I've copied parts
from the Musicians guide, the Jack README and added a section regarding
rtirq. It is by no means complete. Missing things that come to mind are
common bugs, a2jmidid, Jack/ALSA bridging etc.
We probably need one for pulseaudio as well, with particular emphasis on
starting and stopping pulseaudio, logging and bug reporting, jackdbus
integration, jack module loading, pacmd startup scripts in qjackctl, and
the new jam-control app
Please feel free to log in and make corrections changes and additions.
It would be great of we could come up with a comprehensive wiki for new
Fedora users that is at least as good as that provided by other distros
like Arch.
Here's the new Jack page:
https://fedoraproject.org/wiki/JACK_Audio_Connection_Kit
And here are existing pages in the wiki that need updating/reorganizing:
https://fedoraproject.org/wiki/How_to_debug_PulseAudio_problems
https://fedoraproject.org/wiki/How_to_troubleshoot_sound_problems
regards,
Brendan
10 years, 10 months
Another F18 update
by Brendan Jones
The following comment has been added to the drumkv1-0.1.0-4.fc18 update:
bodhi - 2012-11-19 06:56:37 (karma: 0)
This update has been pushed to testing
To reply to this comment, please visit the URL at the bottom of this mail
================================================================================
drumkv1-0.1.0-4.fc18
================================================================================
Update ID: FEDORA-2012-18479
Release: Fedora 18
Status: testing
Type: bugfix
Karma: 0
Bugs: 870184 - Review Request: drumkv1 - an old-school digital
drumkit
: sampler
Notes: drumkv1 is an old-school all-digital drum-kit sampler
synthesizer
: with stereo fx. Features: * pure stand-alone JACK
: client with JACK-session and both JACK MIDI and ALSA
: MIDI input support; * LV2 instrument plugin.
Submitter: bsjones
Submitted: 2012-11-18 20:08:52
Comments: bodhi - 2012-11-18 20:09:11 (karma 0)
This update has been submitted for testing by bsjones.
autoqa - 2012-11-18 20:14:31 (karma 0)
AutoQA: depcheck test PASSED on i386. Result log:
http://autoqa.fedoraproject.org/report/iz04 (results
are informative only)
autoqa - 2012-11-18 20:15:01 (karma 0)
AutoQA: depcheck test PASSED on x86_64. Result log:
http://autoqa.fedoraproject.org/report/iz07 (results
are informative only)
bodhi - 2012-11-19 04:43:52 (karma 0)
This update is currently being pushed to the Fedora 18
testing updates repository.
bodhi - 2012-11-19 06:56:37 (karma 0)
This update has been pushed to testing
https://admin.fedoraproject.org/updates/FEDORA-2012-18479/drumkv1-0.1.0-4...
10 years, 10 months
realTimeConfigQuickScan
by Brendan Jones
Hi all
this has been pushed to testing in f18 - if I could get some positive
karma on this
Thanks
Brendan
To reply to this comment, please visit the URL at the bottom of this mail
================================================================================
realTimeConfigQuickScan-0-0.9.20120506hg.fc18
================================================================================
Update ID: FEDORA-2012-18270
Release: Fedora 18
Status: testing
Type: newpackage
Karma: 0
Bugs: 865303 - Review Request: realTimeConfigQuickScan - inspect
system
: settings for realtime performance
Notes: RealTimeConfigQuickScan inspects a system for its realtime
audio
: capability and suggests solutions to any problem it
: finds. Command line or TK GUI interfaces.
Submitter: bsjones
Submitted: 2012-11-15 14:24:51
Comments: bodhi - 2012-11-15 14:25:03 (karma 0)
This update has been submitted for testing by bsjones.
autoqa - 2012-11-15 14:45:31 (karma 0)
AutoQA: depcheck test PASSED on x86_64. Result log:
http://autoqa.fedoraproject.org/report/ivso (results
are informative only)
autoqa - 2012-11-15 14:49:14 (karma 0)
AutoQA: depcheck test PASSED on i386. Result log:
http://autoqa.fedoraproject.org/report/ivtb (results
are informative only)
bodhi - 2012-11-15 17:58:49 (karma 0)
This update is currently being pushed to the Fedora 18
testing updates repository.
bodhi - 2012-11-15 19:57:51 (karma 0)
This update has been pushed to testing
https://admin.fedoraproject.org/updates/FEDORA-2012-18270/realTimeConfigQ...
10 years, 10 months
Heads up: jack problem on F-17
by Orcan Ogetbil
Hi all,
I accidentally pushed a optimized jack build
jack-audio-connection-kit-1.9.8-10.fc17 to the stable repo, which
reintroduces the verbosity problem[1] (Strangely, when I built this
package locally, I did not have this issue ).
For now, please keep your jack version at
jack-audio-connection-kit-1.9.8-9.fc17, or use the optimized but
non-verbose builds from [2].
I will keep you updated as soon as we come up with a solution.
I apologize for the inconvenience.
Best,
Orcan
[1] https://bugzilla.redhat.com/show_bug.cgi?id=827748
[2] http://oget.fedorapeople.org/jack/
10 years, 10 months
Re: [Fedora-music-list] Fedora Jam KDE theme - review required
by Christopher Antila
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 11/13/2012 05:10 AM, Brendan Jones wrote:
>
> fedora-jam-kde-theme is up for review [1].
>
> Some screenshots here [2]. Still not sure if this will pass the
> Spins review process but we will see. With this in mind I've tried
> not to rock the boat to much by going with the spherical cow splash
> icons and basing the wallpaper on the F18 theme.
>
> If any reviewers could pick this up that'd be great. We need to get
> this reviewed ASAP.
>
> [1] https://bugzilla.redhat.com/show_bug.cgi?id=875735 [2]
> http://bsjones.fedorapeople.org/projects/fedora-jam-kde-theme/
This looks really slick!
Christopher
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10 years, 10 months
spin-kickstarts/fedora-jam
by Brendan Jones
spin-kickstarts/fedora-jam/fedora-live-jam-kde.ks | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
New commits:
commit 1aec3630fbfe909b2c44e7d0f381e3bcec8ed6d4
Author: Brendan Jones <brendan.jones.it(a)gmail.com>
Date: Tue Nov 13 10:59:59 2012 +0100
Add default icon theme.
diff --git a/spin-kickstarts/fedora-jam/fedora-live-jam-kde.ks b/spin-kickstarts/fedora-jam/fedora-live-jam-kde.ks
index ae250e1..abe09af 100644
--- a/spin-kickstarts/fedora-jam/fedora-live-jam-kde.ks
+++ b/spin-kickstarts/fedora-jam/fedora-live-jam-kde.ks
@@ -188,7 +188,7 @@ thunderbird
#setup kickoff favorites
/bin/mkdir -p /etc/skel/.kde/share/config
-JAMFAVORITES=/usr/share/applications/firefox.desktop,/usr/share/applications/mozilla-thunderbird.desktop,/usr/share/applications/fedora-qjackctl.desktop,/usr/share/applications/qtractor.desktop,/usr/share/applications/frescobaldi.desktop,/usr/share/applications/kde4/konsole.desktop,/usr/share/applications/kde4/dolphin.desktop,/usr/share/applications/kde4/systemsettings.desktop
+JAMFAVORITES=/usr/share/applications/liveinst.desktop,/usr/share/applications/firefox.desktop,/usr/share/applications/fedora-qjackctl.desktop,/usr/share/applications/qtractor.desktop,/usr/share/applications/frescobaldi.desktop,/usr/share/applications/kde4/konsole.desktop,/usr/share/applications/kde4/dolphin.desktop,/usr/share/applications/kde4/systemsettings.desktop
cat <<EOF >> /etc/skel/.kde/share/config/kickoffrc
[Favorites]
@@ -208,6 +208,14 @@ name=Caledonia
[Theme-plasma-netbook]
#name=Fedora_Jam-netbook
name=Spherical_Cow-netbook
+[Icons]
+Theme=KFaenza
+EOF
+
+## Set icon theme (there must be a better way to do this)
+cat >> /etc/skel/.kde/share/config/kdeglobals << EOF
+[Icons]
+Theme=KFaenza
EOF
## Set default splash (Awaiting packaging in fedora-jam-kde-theme:)
10 years, 10 months
