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<div class="moz-cite-prefix">OK, all is working now. ;)<br>
But i can't help you, i don't know who is the author of this
abstraction, sorry.<br>
++<br>
<br>
Jack<br>
<br>
<br>
<br>
Le 16/04/2014 16:05, Nick Arner a écrit :<br>
</div>
<blockquote
cite="mid:CAD1H43Vs2d7nMT1VopPTOXrn_e92nuSUQKwYaZuwG6zs9C1Z+g@mail.gmail.com"
type="cite">
<div dir="ltr">Hi Jack,
<div><br>
</div>
<div>Yes, that was my mistake; I've now attached both the patch
and the abstraction. </div>
<div><br>
</div>
<div>Thanks!<br>
Nick</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">
On Wed, Apr 16, 2014 at 6:00 AM, <span dir="ltr"><<a
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Today's Topics:<br>
<br>
1. Re: Pd and RME HDSP alsa vs jack performance (Peter
P.)<br>
2. Re: PD List (GEM VideoSynth) (Jack)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Tue, 15 Apr 2014 18:40:31 -0400<br>
From: "Peter P." <<a moz-do-not-send="true"
href="mailto:p8rpp@aol.com">p8rpp@aol.com</a>><br>
Subject: Re: [PD] Pd and RME HDSP alsa vs jack performance<br>
To: Federico Galland <<a moz-do-not-send="true"
href="mailto:federicogalland@gmail.com">federicogalland@gmail.com</a>><br>
Cc: <a moz-do-not-send="true" href="mailto:pd-list@iem.at">pd-list@iem.at</a><br>
Message-ID: <<a moz-do-not-send="true"
href="mailto:20140415224030.GB8322@aol.de">20140415224030.GB8322@aol.de</a>><br>
Content-Type: text/plain; charset=us-ascii<br>
<br>
* Federico Galland <<a moz-do-not-send="true"
href="mailto:federicogalland@gmail.com">federicogalland@gmail.com</a>>
[2014-04-15 17:46]:<br>
> On Tue, 15 Apr 2014 16:07:03 -0400<br>
> "Peter P." <<a moz-do-not-send="true"
href="mailto:p8rpp@aol.com">p8rpp@aol.com</a>> wrote:<br>
><br>
> > Hi list,<br>
> ><br>
> > following up onto some earlier postings I had made
about the current<br>
> > problems running Pd with any buffersize larger(!)
than 5 using alsa,<br>
> > the mmap code and an RME HDSP Multiface on Debian
Linux, here are some<br>
> > more results from tests I made recently:<br>
> ><br>
> > Alsa only works with audiobuf smaller 6, otherwise
causing totally<br>
> > garbled sound. With that short buffer settings it
is unusable for<br>
> > everything more CPU intense than sine test tones
though.<br>
> ><br>
> > The only way to get Pd to run reliably under some
load on my box using<br>
> > the HDSP is to use jack with 256 frames at 2
periods/buffer.<br>
> ><br>
> > Now what is weird is that the built in soundcard
of my box is able to<br>
> > do the same thing without problems with just 64
frames at 3<br>
> > periods/buffer in jack.<br>
> ><br>
> > Again with the HDSP, once I start adding Gem and
let it render a<br>
> > single geo, I do get many audio dropouts unless I
increase jack's<br>
> > buffers to a minimum 2048 frames at 2
frames/buffer.<br>
> ><br>
> > I tested this using two different HDSP cards on
two different Debian<br>
> > boxes, using the -rt flag, realtime and
non-realtime kernels,<br>
> > optional callbacks and different sleegrain
setting.<br>
> ><br>
> > Somehow it seems very sad that one of the best pro
multichannel sound<br>
> > cards under Linux seems to be unusable with Pd
under Alsa reliably.<br>
> ><br>
> > I would like to contribute to any ways of
improving this situation and<br>
> > desperately hope that someone can comment on my
findings.<br>
> ><br>
> > thank you!<br>
> > best, Peter<br>
> ><br>
> > _______________________________________________<br>
> > <a moz-do-not-send="true"
href="mailto:Pd-list@iem.at">Pd-list@iem.at</a> mailing
list<br>
> > UNSUBSCRIBE and account-management -> <a
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href="http://lists.puredata.info/listinfo/pd-list"
target="_blank">http://lists.puredata.info/listinfo/pd-list</a><br>
><br>
> I guess you have ruled out everything under this wiki <a
moz-do-not-send="true"
href="http://wiki.linuxaudio.org/wiki/system_configuration"
target="_blank">http://wiki.linuxaudio.org/wiki/system_configuration</a>
?<br>
Thank you Federico,<br>
I looked at the page and most suggesstions is stuff I
already<br>
considered.<br>
><br>
> Is the HDSP a PCI interface? If so, pay particular
attention to the "pci bus latency" part.<br>
Well it is a ExpressCard interface in my case, and I wonder
if that<br>
qualifies as PCI device. The above pages mentions that PCIe
devices<br>
are not affected by the irq priorities as PCI does.<br>
<br>
best, Peter<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Wed, 16 Apr 2014 10:55:40 +0200<br>
From: Jack <<a moz-do-not-send="true"
href="mailto:jack@rybn.org">jack@rybn.org</a>><br>
Subject: Re: [PD] PD List (GEM VideoSynth)<br>
To: Nick Arner <<a moz-do-not-send="true"
href="mailto:nicholasarner@gmail.com">nicholasarner@gmail.com</a>>,
pd-list <<a moz-do-not-send="true"
href="mailto:pd-list@iem.at">pd-list@iem.at</a>><br>
Message-ID: <<a moz-do-not-send="true"
href="mailto:534E458C.6060408@rybn.org">534E458C.6060408@rybn.org</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hello Nick,<br>
<br>
Don't forget to reply to all. That could be interresting for
other<br>
people on this list.<br>
The document you sent is now a patch (attached).<br>
But what can we do with it ? There is only a single object
[video_synth]<br>
on the canvas. It seems to be an abstraction, right ?<br>
You have to send us the patch AND the abstraction.<br>
And where are other objects like [gemwin] ? We are talking
about Gem, no ?<br>
++<br>
<br>
Jack<br>
<br>
<br>
<br>
06 59 23 94 69 Andr?<br>
<br>
Le 16/04/2014 01:23, Nick Arner a ?crit :<br>
> Hi Jack,<br>
><br>
> Thanks for the reply! I've attached the PD patch (it
looks like the<br>
> attachment went through this time)<br>
><br>
> Thanks,<br>
> Nick<br>
><br>
> --<br>
> <a moz-do-not-send="true" href="http://nickarner.com"
target="_blank">nickarner.com</a> <<a
moz-do-not-send="true" href="http://nickarner.com"
target="_blank">http://nickarner.com</a>><br>
><br>
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