[Fedora-music-list] 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
officially out.
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
off topic.
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]>
wrote:
>
> 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
> wondering.
>
> Here's the file with both sets of tests and the uname -a info as requested
> by Fernando.
> -Brian
>
>> On Wed, Feb 22, 2012 at 6:54 AM, Brian Monroe <briancmonroe at
gmail.com[https://admin.fedoraproject.org/mailman/listinfo/music]
>> wrote:
>> 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.