Low Latency vs. Real Time Kernel - actual latencies ?
Hello Fedora musicians, I've been lurking this list for a little bit and this is my first time chiming in on something.
I think it is important to pursue an official realtime kernel for Fedora. I think a distribution focused on audio without a realtime kernel would have a serious bug, that IMO, would be worth delaying publication for.
>So I had a beer with hansomepirate(jdulaney), who is, or was on the kernel
sig, last night and we got to talking about a RT kernel.
>Last time we talked to the kernel folks about an rt kernel, they weren't
impressed with the "need" for Fedora, but that was before the Spin was
>Now might be a good time to raise this issue again? I dug through my
archives and found this thread. Now that we have an actual spin that's out,
we can actually redo some of the testing to have more realistic tests.
(multitrack with effects)
>I feel like right now, it's one of the few benefits that the ubuntu studio
folks have (or at least claim to have) over us. The other is some
semi-proprietary software that on... you know what, never mind it's getting
>Anyways, does the list think this is worth pursuing?
>>On Wed Feb 22 2012 at 9:10:29 PM Brian Monroe <briancmonroe at gmail.com[https://admin.fedoraproject.org/mailman/listinfo/music]>
>> Ok, I redid all the tests, while the system was only running my DE and the
>> test, and then again when I put it under duress by running a script that
>> looped "du -h /" and "ls -Ral /usr/" over and over. I ran the script twice
>> to get my proc up a bit to emulate running some intese delays and reverbs
>> or other effects.
>> Ironically the kernels typically did better when the scripts were running.
>> Personally I think there's a clear advantage with CCRMA's kernel or even
>> just a preempt kernel in the max lat areas. Those max numbers jumped up
>> close to where they were near the beggining of the test if anyone was
>> Here's the file with both sets of tests and the uname -a info as requested
>> by Fernando.
>>> On Wed, Feb 22, 2012 at 6:54 AM, Brian Monroe <briancmonroe at gmail.com[https://admin.fedoraproject.org/mailman/listinfo/music]
>>> I'll be sure to include that on the next batch. I used the kernel you
>>> after installing the CCRMA repo when you use yum install kernel-rt, which
>>> happens to be 3.0.17-1.rt33.1.fc16.ccrma.x86_64.rt. I'll go back and
>>> include the other info to the old results when I do the load testing
>>> tonight or tomorrow.
8 years, 2 months
spin kickstart update needed
by Ian Malone
Just a heads up, I'm testing this currently, but will take a while to
build a new rawhide livecd (unless someone know a way to do it on
Fedora architecture?). The favourites menu in F22 Jam is just the
default KDE, as the location of the file has changed. Some of the
.desktop files have also moved. I think this has also hit the KDE SIG
for the live install favourites shortcut, though once they change it
our kickstart should still be compatible.
--- /usr/share/spin-kickstarts/fedora-live-jam-kde.ks 2013-06-28
+++ fedora-live-jam-kde.ks 2015-03-09 22:43:55.572236322 +0000
@@ -190,10 +190,10 @@
#setup kickoff favorites
/bin/mkdir -p /etc/skel/.kde/share/config
-cat <<EOF >> /etc/skel/.kde/share/config/kickoffrc
+cat <<EOF >> /etc/skel/.config/kickoffrc
I've left in some of the default favourites this time around
(kfmclient, Kontact, ktpcontactlist). There is also a separate new
systemsettings app alongside the old one (now under kde4). I haven't
really tried the new one yet, but I think we should leave that
favourite as it is (now pointing to the new one) rather than changing
to point to the old one.
8 years, 2 months
Re: [Fedora-music-list] Crossfade GNU/Linux 0.90: Fedora Remix for DJing from USB drives
1. Yes, it is a Fedora Remix. It is mostly Fedora packages, plus a few
RPM Fusion packages, the realtime kernel from PlanetCCRMA, two scripts I
wrote and a bunch of little configuration tweaks.
2. Thanks, but I kinda want to draw the logo myself. I want to learn how
to make vector graphics. Also, I'd like to avoid complications with
selling USB drives with the logo printed on them. Even if someone
contributed a freely licensed logo, I feel it wouldn't be cool to make
money from their work without splitting some of the profit with them...
and I doubt there will be that much profit to start with.
On 03/16/2015 01:39 AM, Klaatu wrote:
> On 03/16/2015 06:05 PM, Be wrote:
>> Crossfade GNU/Linux 0.90 is a cross-platform digital DJ system for USB
>> flash and portable hard drives. Crossfade GNU/Linux allows you to use a
>> USB drive with your music collection to DJ on any modern PC (with an x86
>> or x86_64 CPU), including Apple Macs, using the DJ program Mixxx
>> customized however you like. USB drives with Crossfade GNU/Linux
>> installed on them show up in Windows, Mac OS X, and GNU/Linux as normal
>> USB drives that music or any other data can be copied onto. Unlike
>> ordinary USB drives, they can also be used to boot Crossfade GNU/Linux.
>> After rebooting, the PC will be back to how it was before. See the
>> manual included in the torrent for installations instructions.
>> Get the torrent here:
>> Please seed the torrent! :)
>> Crossfade GNU/Linux and Mixxx are free software--free as in artistic
>> freedom, not just price. You are free and encouraged to use, copy,
>> *share*, and modify this software however you wish and share your
>> changes with the community here. Sharing Crossfade GNU/Linux can be a
>> great way to encourage friends to start DJing or introduce DJs who use
>> proprietary software such as Traktor, Serato Scratch, Serato Itch, or
>> Virtual DJ to free software without having to commit to installing
>> anything on their PC.
>> Crossfade GNU/Linux is setup with a realtime Linux kernel for optimal
>> performance. It includes the Xfce graphical desktop environment, Midori
>> web browser, and Clementine music player. It has a number of other
>> programs for live musical performance including the Hydrogen drum
>> machine, SooperLooper and Giada loopers, Guitarix electric guitar
>> amplifier, Rakarrak guitar effects board, Ardour digital audio
>> workstation,Audacity wave editor, and many LV2 and LADSPA audio effects
>> plugins. Additionally, Crossfade GNU/Linux includes utilities that make
>> it useful as a computer rescue system, such as the GParted partition
>> manager, GNU GRUB bootloader, TestDisk data recovery program, FSArchiver
>> filesystem backup program, and MATE Disk Usage Analyzer. Crossfade
>> GNU/Linux is a Fedora Remix containing software from sources other than
>> Fedora, namely RPMFusion and PlanetCCRMA, as well as scripts and
>> configuration specific to Crossfade GNU/Linux.
>> To do:
>> -Confirm that USB drives are readable by CDJs. I do not have CDJs so
>> help would be appreciated! (DJ Pegasus also mentioned it should be
>> readable by his car stereo... o.O)
>> -A logo and desktop background. I have a sketch on paper for a logo. Now
>> I need to learn how to use Inkscape.
>> -Internationalization. Does anyone want to volunteer to translate the
>> liveusb-install script and manual?
>> I am thinking about ordering custom USB drives with the logo printed on
>> them to sell with Crossfade preloaded. They would be either 16, 32, or
>> 64 GB, depending on how much it would cost to make each of those. They
>> would be metal cylinders with tight screw-on caps. The caps would be
>> able to attach to key rings. I will try to get USB 3.0 drives if
>> possible. I don't know what the price would be yet, but I am thinking
>> somewhere from $10-25 USD. Would anyone be interested in buying that?
>> How much would you be willing to pay for it?
>> music mailing list
> I am familiar with this thing, "linux", and really your little distro
> sounds interesting and, as I have a need for something like this for a
> party coming up in two weeks, I might just try it out.
> Two questions:
> 1. is it Fedora-based or are you just promoting it here based on the
> music aspect?
> 2. where can I find your logo sketch? I can't make any promises, but I
> know my way around inkscape.
> music mailing list
8 years, 2 months
Linux Audio Conference 2015 - Call for Participation
by Fernando Lopez-Lezcano
Hey, coming up soon!...
-------- Forwarded Message --------
[Sorry for cross-posting, please distribute.]
Linux Audio Conference 2015 - Call for Participation
(Due to exceptional circumstances, this announcement comes a bit late,
so please note the early deadline of Feb 1st for submissions. We
We are happy to announce the next issue of the Linux Audio Conference
(LAC), April 9-12, 2015 @ JGU | Johannes Gutenberg University, in
The Linux Audio Conference is an international conference that brings
together musicians, sound artists, software developers and researchers,
working with Linux as an open, stable, professional platform for audio
and media research and music production. LAC includes paper sessions,
workshops, and a diverse program of electronic music.
*Call for Papers, Workshops, Music and Installations*
We invite submissions of papers addressing all areas of audio processing
and media creation based on Linux and other open source software. Papers
can focus on technical, artistic and scientific issues and should target
developers or users. In our call for music, we are looking for works
that have been produced or composed entirely/mostly using Linux and
other open source music software.
The online submission of papers, workshops, music and installations is
now open at http://lac.linuxaudio.org/2015/participation
The deadline for all submissions is Feb 1st, 2015 (23:59 HAST).
You are invited to register for participation on our conference website.
There you will find up-to-date instructions, as well as important
information about dates, travel, lodging, and so on.
This year's conference is hosted by the Computer Music Research Group
(Bereich Musikinformatik) at the IKM (Institut für Kunstgeschichte und
Musikwissenschaft) of the Johannes Gutenberg University (JGU) at
Mainz. Being founded in 1991, our research group has been among the
first German academic institutions in this interdisciplinary field at
the intersection of music, mathematics, computer science and media
technology. In our media lab students are working almost exclusively
with Linux, and in our research we are also devoted to contributing to
the growing body of open source audio and computer music software.
We look forward to your submissions and hope to meet you in Mainz in
The LAC 2015 Organizing Team
8 years, 2 months