From: Thomas Sailer <sailer@scs.ch>
To: Jussi Laako <jussi.laako@kolumbus.fi>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Preemption Latency Measurement Tool
Date: Fri, 21 Sep 2001 20:46:41 +0200 [thread overview]
Message-ID: <3BAB8B11.7ED581DB@scs.ch> (raw)
In-Reply-To: <E15kEjB-0006n9-00@the-village.bc.nu> <3BAB69CF.A3F9D217@kolumbus.fi>
Jussi Laako schrieb:
>
> Alan Cox wrote:
> >
> > Sound cards have a lot of buffering, we are talking 64-128Kbytes + on
> > card buffers. Thats 0.25-0.5 seconds at 48Khz 16bit stereo
>
> Only "soundcards", that cheap crap like SoundBlaster. Professional
> lowlatency soundcards usually have something like 128-512 samples per
> channel for 24-bit (32-bit data) 96 kHz 8 channels...
This doesn't make sense. Even professional soundcards provide hundreds
of kBytes of buffer space. And even with most cheap PCI cards you
need not wait until the whole buffer is full before start reading
samples. Even with those soundcards the latency is mostly caused
by the digital filters in the codec.
Tom
next prev parent reply other threads:[~2001-09-21 18:46 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200109202253.RAA21082@waste.org>
2001-09-20 23:15 ` [PATCH] Preemption Latency Measurement Tool Oliver Xymoron
2001-09-21 0:42 ` Roger Larsson
2001-09-21 1:03 ` Alan Cox
2001-09-21 1:22 ` Andrea Arcangeli
2001-09-21 1:51 ` Rik van Riel
2001-09-21 1:38 ` Roger Larsson
2001-09-21 1:53 ` Roger Larsson
2001-09-21 2:08 ` Roger Larsson
2001-09-21 2:29 ` Rik van Riel
2001-09-21 16:24 ` Jussi Laako
2001-09-21 16:36 ` Alan Cox
2001-09-21 18:46 ` Thomas Sailer [this message]
2001-09-22 10:30 ` Jussi Laako
2001-09-21 16:18 ` Stefan Westerfeld
2001-09-21 20:18 ` Dieter Nützel
[not found] ` <200109212018.f8LKImG21229@zero.tech9.net>
2001-09-21 21:47 ` Robert Love
2002-04-09 5:23 [PATCH] preemption latency measurement tool Robert Love
-- strict thread matches above, loose matches on Subject: below --
2001-09-19 22:44 [PATCH] Preemption Latency Measurement Tool Robert Love
2001-09-20 1:40 ` Ignacio Vazquez-Abrams
2001-09-20 2:23 ` safemode
2001-09-20 1:13 ` David Lang
2001-09-20 2:57 ` Robert Love
2001-09-20 2:38 ` Robert Love
2001-09-20 6:31 ` Dieter Nützel
2001-09-20 20:27 ` Robert Love
2001-09-20 6:31 ` Dieter Nützel
[not found] ` <20010920063143.424BD1E41A@Cantor.suse.de>
2001-09-20 6:41 ` Andrea Arcangeli
2001-09-20 7:57 ` Dieter Nützel
[not found] ` <20010920075751.6CA791E6B2@Cantor.suse.de>
2001-09-20 8:21 ` Andrea Arcangeli
2001-09-20 20:13 ` george anzinger
2001-09-20 20:38 ` Randy.Dunlap
2001-09-20 21:10 ` Robert Love
2001-09-20 21:35 ` Dieter Nützel
2001-09-20 22:03 ` Oliver Xymoron
2001-09-20 22:51 ` Dieter Nützel
[not found] ` <200109202252.f8KMqLG17327@zero.tech9.net>
2001-09-21 3:17 ` Robert Love
2001-09-21 15:48 ` george anzinger
2001-09-22 21:09 ` Dieter Nützel
2001-09-22 23:40 ` safemode
2001-09-22 23:46 ` Dieter Nützel
2001-09-23 0:15 ` safemode
[not found] ` <200109222340.BAA37547@blipp.internet5.net>
2001-09-23 0:38 ` Roger Larsson
2001-09-23 1:42 ` safemode
2001-09-23 3:02 ` Robert Love
2001-09-23 16:43 ` Roger Larsson
2001-09-23 0:42 ` Dieter Nützel
[not found] ` <200109222341.f8MNfnG25152@zero.tech9.net>
2001-09-23 2:50 ` Robert Love
2001-09-23 3:14 ` george anzinger
2001-09-23 4:06 ` Dieter Nützel
[not found] ` <200109222347.f8MNlMG25157@zero.tech9.net>
2001-09-23 2:54 ` Robert Love
[not found] ` <200109230016.f8N0G6G25222@zero.tech9.net>
2001-09-23 2:58 ` Robert Love
[not found] ` <200109222120.f8MLKYG24859@zero.tech9.net>
2001-09-23 2:44 ` Robert Love
[not found] ` <200109200757.JAA60995@blipp.internet5.net>
2001-09-20 17:37 ` Roger Larsson
2001-09-20 21:29 ` Robert Love
2001-09-20 21:53 ` Dieter Nützel
[not found] ` <200109200758.f8K7wEG13675@zero.tech9.net>
2001-09-20 21:09 ` Robert Love
2001-09-20 20:01 ` Tobias Diedrich
2001-09-20 22:01 ` Robert Love
2001-09-22 3:57 ` Andre Pang
2001-09-22 6:10 ` Robert Love
2001-09-22 7:22 ` Andre Pang
2001-09-23 3:18 ` george anzinger
2001-09-23 3:21 ` Robert Love
2001-09-23 7:05 ` Robert Love
2001-09-23 12:03 ` Andre Pang
2001-09-23 18:31 ` Robert Love
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