From kde-multimedia  Thu Sep 09 12:20:04 2004
From: Arnold Krille <arnold () arnoldarts ! de>
Date: Thu, 09 Sep 2004 12:20:04 +0000
To: kde-multimedia
Subject: Re: KDE4 MM,
Message-Id: <200409091420.10084.arnold () arnoldarts ! de>
X-MARC-Message: https://marc.info/?l=kde-multimedia&m=109473242125561
MIME-Version: 1
Content-Type: multipart/mixed; boundary="--===============0827298325=="

--===============0827298325==
Content-Type: multipart/signed; boundary="nextPart1468734.NvIPdpkk4v";
	protocol="application/pgp-signature"; micalg=pgp-sha1
Content-Transfer-Encoding: 7bit

--nextPart1468734.NvIPdpkk4v
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline

On Thursday 09 September 2004 09:58, Ronald S. Bultje wrote:
> On Wed, 2004-09-08 at 21:56, Arnold Krille wrote:
> > Yes there are process switchings: From your master-clock to all the oth=
er
> > apps doing video and audio. And this are a lot of switches...
> No there are not. ;). There's no process switching involved here with
> the clock, each task (video, audio) runs in its own process and access
> the clock in its own process. There's just the process switches (in the
> kernel) between the actual video data processing and audio data
> processing. Those run concurrently, though.

And these kernel-process-switches are the thing that slows the system. You=
=20
should check Paul Davis' talk at Linux Audio Developers Meeting in 2003 abo=
ut=20
Jack, where he explains how many cycles are left for doing the=20
audio-processing...

> For pro-audio, there's no video and thus only one process. Latency can't
> get much lower.

You don't know Jack, do you? Jack's main difference to (almost) every other=
=20
sound system is that it beams audio between different apps in realtime. Not=
=20
by doing all the processing in one process and just giving multiple graphic=
al=20
interfaces but _really_ by different processes! That is unique in the whole=
=20
pro-audio-world, even Windows or Mac can't do that...

Arnold

=2D-=20
Get my public-key from pgp.mit.edu or pgp.uni-mainz.de
=2D--
Hi, I am a .signature virus. Please copy me into your ~/.signature and send=
 me=20
to all your contacts.
After a month or so log in as root and do a rm / -rf. Or ask your=20
administrator to do so...

--nextPart1468734.NvIPdpkk4v
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.6 (GNU/Linux)

iD8DBQBBQEp5uYLL1cDjHx0RAl9rAJ46nhAi+lP5+VW6/ORgkUeF6gWycACdHp7u
q+bB/kO1IaVunAhALgem2tA=
=ZeGy
-----END PGP SIGNATURE-----

--nextPart1468734.NvIPdpkk4v--

--===============0827298325==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
kde-multimedia mailing list
kde-multimedia@kde.org
https://mail.kde.org/mailman/listinfo/kde-multimedia

--===============0827298325==--