Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!

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To: Paul Davis <paul@...>
Cc: Linux-audio-user <linux-audio-user@...>
Date: Monday, June 13, 2011 - 12:31 am

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On Sun, Jun 12, 2011 at 3:23 PM, Paul Davis wrote:

> On Sun, Jun 12, 2011 at 12:48 PM, Aaron Krister Johnson

PianoTeq doesn't configure things when jack is running. It just detects and
runs with what jack's setting are. However, the *user* configures things
when Alsa is running. Things like sr, buffer sizes, and periods. I was
comparing apples to apples when I announced my results: for instance, if I
set PT to run Alsa @ 256 samples and 2 buffers per period, I also ran jackd
with those setting before starting PT.

I'd love your insight into what could have been going on; things seem quite
a bit better with jack2 (jackdmp-1.9.7) on my system---and, like I said, all
of a sudden weird MIDI stuff that was happening in fluidsynth is now solved,
too....I think the fluidsynth thing was actually related to a new codebase
in FS since 1.1.2 where they merged the scheduling of MIDI and audio being
handled by the same thread, IIRC...could be that the way jack1 in the
version I was running was structured caused some unforeseen voodoo.

> P.S. Did you get my email ever about jackctl.py? Not the one in the jack

Hmmm....like what, Qjackctl? That's a GUI, this is CL. And the CL tools that
currently come with jack do the trick, but with needless typing and lack of
ease---that's what my-front end solves. What other CL tools for making jack
connections in an *easy* way are there?

AKJ

--
Aaron Krister Johnson
http://www.akjmusic.com
http://www.untwelve.org

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On Sun, Jun 12, 2011 at 3:23 PM, Paul Davis <paul@linuxaudiosystems.com> wrote:
On Sun, Jun 12, 2011 at 12:48 PM, Aaron Krister Johnson
<aaron@akjmusic.com> wrote:=

> Hi Paul-

ettings, etc.
you are
e.

oops, i somehow missed this in the thread. the settings cannot be the=

same because PianoTeq doesn't control the JACK settings. just run the
command i mentioned and that will let you see how ALSA gets configured
by PT and then we can compare it with the way JACK does it.
PianoTeq doesn=
't configure things when jack is running. It just detects and runs with=
what jack's setting are. However, the *user* configures things when Al=
sa is running. Things like sr, buffer sizes, and periods. I was comparing a=
pples to apples when I announced my results: for instance, if I set PT to r=
un Alsa @ 256 samples and 2 buffers per period, I also ran jackd with those=
setting before starting PT.
I'd love your insight into what could have been goi=
ng on; things seem quite a bit better with jack2 (jackdmp-1.9.7) on my syst=
em---and, like I said, all of a sudden weird MIDI stuff that was happening =
in fluidsynth is now solved, too....I think the fluidsynth thing was actual=
ly related to a new codebase in FS since 1.1.2 where they merged the schedu=
ling of MIDI and audio being handled by the same thread, IIRC...could be th=
at the way jack1 in the version I was running was structured caused some un=
foreseen voodoo.

> P.S. Did you get my email ever about jackctl.py? Not the one in the ja=
ck

yeah, its in the backlog at present. its functionality overlaps quite=

a lot of other stuff.Hm=
mm....like what, Qjackctl? That's a GUI, this is CL. And the CL tools t=
hat currently come with jack do the trick, but with needless typing and lac=
k of ease---that's what my-front end solves. What other CL tools for ma=
king jack connections in an *easy* way are there?
AKJ=C2=A0-- Aaron Krister Johnson=
http://www.akjmusic.c=
om
http://www.=
untwelve.org

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Messages in current thread:
[LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Sun Jun 12, 7:40 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Sun Jun 19, 8:46 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Tue Jun 14, 7:11 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Tue Jun 14, 11:44 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Paul Davis, (Tue Jun 14, 11:30 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Lorenzo Sutton, (Wed Jun 15, 8:32 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Tue Jun 14, 12:43 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Gerhard Zintel, (Tue Jun 14, 11:14 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Jeremy Jongepier, (Tue Jun 14, 7:28 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Tue Jun 14, 7:36 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Jeremy Jongepier, (Tue Jun 14, 8:00 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Paul Davis, (Sun Jun 12, 1:47 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Atte André Jensen, (Sun Jun 12, 9:08 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Sun Jun 12, 4:49 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Paul Davis, (Sun Jun 12, 8:23 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Mon Jun 13, 12:31 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Paul Davis, (Mon Jun 13, 1:02 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Mon Jun 13, 7:08 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Mon Jun 13, 7:06 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Robin Gareus, (Mon Jun 13, 9:54 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Igor Brkic, (Sun Jun 12, 12:16 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Sun Jun 12, 9:44 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Jeremy Jongepier, (Sun Jun 12, 9:59 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Sun Jun 12, 10:15 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, James Warden, (Sun Jun 12, 10:47 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Sun Jun 12, 12:30 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Sun Jun 12, 5:08 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Sun Jun 12, 6:28 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Ralf Mardorf, (Sun Jun 12, 12:35 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, rosea.grammostola, (Sun Jun 12, 9:36 am)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Aaron Krister Johnson, (Sun Jun 12, 4:45 pm)
Re: [LAU] Jack vs. Alsa, PianoTeq demo: Alsa wins!, Paul Davis, (Sun Jun 12, 8:21 pm)