From: Lennart Poettering <mznyfn@0pointer.de>
To: alsa-devel@alsa-project.org, Takashi Iwai <tiwai@suse.de>
Subject: Re: Timer instability
Date: Mon, 23 Feb 2009 20:20:45 +0100 [thread overview]
Message-ID: <20090223192045.GA19543@tango.0pointer.de> (raw)
In-Reply-To: <20090223025610.GA7062@tango.0pointer.de>
On Mon, 23.02.09 03:56, Lennart Poettering (mznyfn@0pointer.de) wrote:
> Hmm, for now my little testing experiment I've now found es1969,
> ens1371, intel8x0, snd-emu10k1 and some intel-hda to have unreliable
> _avail() or _delay().
And here's the output for HDA STAC92xx:
http://pastebin.mandriva.com/7149
The first dump is the interesting one: when audio starts to play the
buffer abruptly runs empty in just 20us after the device started. (The
rightmost column is the state btw, 3 == playing).
A quick overview of cards where _delay() and/or _avail() are unreliable:
es1969
ens1371
intel8x0
emu10k1
intel-hda on STAC92xx
intel-hda on AD1989B
Lennart
--
Lennart Poettering Red Hat, Inc.
lennart [at] poettering [dot] net ICQ# 11060553
http://0pointer.net/lennart/ GnuPG 0x1A015CC4
next prev parent reply other threads:[~2009-02-23 19:20 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-19 2:46 Timer instability Lennart Poettering
2009-02-19 6:52 ` Takashi Iwai
2009-02-20 1:22 ` Lennart Poettering
2009-02-20 1:26 ` Lennart Poettering
2009-02-20 1:50 ` Lennart Poettering
2009-02-20 7:26 ` Takashi Iwai
2009-02-20 20:34 ` Lennart Poettering
2009-02-21 16:36 ` Takashi Iwai
2009-02-22 3:14 ` Lennart Poettering
2009-02-23 2:42 ` Lennart Poettering
2009-02-23 2:56 ` Lennart Poettering
2009-02-23 19:20 ` Lennart Poettering [this message]
2009-02-23 19:24 ` Colin Guthrie
2009-02-24 3:21 ` Lennart Poettering
2009-02-23 7:47 ` Takashi Iwai
2009-02-24 16:27 ` Takashi Iwai
2009-02-24 18:46 ` Lennart Poettering
2009-02-24 18:59 ` Takashi Iwai
2009-02-24 19:04 ` Jaroslav Kysela
2009-02-24 19:26 ` Lennart Poettering
2009-02-24 20:37 ` Takashi Iwai
2009-02-25 10:08 ` Takashi Iwai
2009-02-25 10:22 ` Takashi Iwai
2009-02-25 12:34 ` Clive Messer
2009-02-25 13:36 ` Takashi Iwai
2009-02-25 15:11 ` Clive Messer
2009-02-25 15:51 ` Takashi Iwai
2009-02-25 16:24 ` Clive Messer
2009-02-25 16:39 ` Takashi Iwai
[not found] ` <200902251656.47813.clive@vacuumtube.org.uk>
2009-02-25 16:59 ` Takashi Iwai
2009-02-25 17:36 ` Clive Messer
2009-02-25 18:13 ` Takashi Iwai
2009-02-25 18:16 ` Clive Messer
2009-02-25 18:34 ` Clive Messer
2009-03-03 16:05 ` Takashi Iwai
2009-03-03 17:41 ` Takashi Iwai
2009-03-09 11:13 ` Clive Messer
2009-03-09 11:20 ` Takashi Iwai
2009-03-09 13:09 ` Takashi Iwai
2009-02-25 15:04 ` Takashi Iwai
2009-02-25 10:44 ` Lennart Poettering
2009-02-24 21:16 ` Lennart Poettering
2009-02-25 10:48 ` Takashi Iwai
2009-02-25 10:57 ` Jaroslav Kysela
2009-02-25 11:04 ` Takashi Iwai
2009-02-25 11:10 ` Jaroslav Kysela
2009-02-25 11:17 ` Takashi Iwai
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