From: Lee Revell <rlrevell@joe-job.com>
To: Dominique Dumont <domi.dumont@free.fr>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
alsa-user <alsa-user@lists.sourceforge.net>,
Francesco Peeters <Francesco@FamPeeters.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: PCM distorsion snapshots from SATA/ALSA conflict (was: [Alsa-user] Pb with simultaneous SATA and ALSA I/O)
Date: Sun, 08 Oct 2006 12:41:13 -0400 [thread overview]
Message-ID: <1160325674.17615.107.camel@mindpipe> (raw)
In-Reply-To: <878xjrqeh2.fsf_-_@gandalf.hd.free.fr>
(it's probably a bad idea to attach .jpgs to a LKML post - please post
them on the web and send a URL)
On Sun, 2006-10-08 at 12:38 +0200, Dominique Dumont wrote:
> Anyway, the oscilloscope shows that:
> - a spike occurs every 330 useconds (about 3kHz)
> (note: 330us is 15.85 times the period of the 48KHz spdif stream)
> - the spike level roughly matches the level of the sine waves 330
> useconds sooner
>
You seem to be using a period size of 256 samples - any change if you
use a larger period size?
Any change if you use setpci to increase LATENCY_TIMER for the SBLive!
card?
Lee
next prev parent reply other threads:[~2006-10-08 16:40 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-25 11:55 Pb with simultaneous SATA and ALSA I/O Dominique Dumont
2006-09-25 12:17 ` [Alsa-user] " Francesco Peeters
2006-10-05 20:42 ` Dominique Dumont
2006-10-05 20:45 ` Lee Revell
2006-10-05 21:01 ` Dominique Dumont
2006-10-05 21:12 ` Lee Revell
2006-10-05 21:50 ` Alan Cox
2006-10-08 10:38 ` PCM distorsion snapshots from SATA/ALSA conflict (was: [Alsa-user] Pb with simultaneous SATA and ALSA I/O) Dominique Dumont
2006-10-08 16:41 ` Lee Revell [this message]
2006-10-14 15:04 ` [Alsa-user] PCM distorsion snapshots from SATA/ALSA conflict Dominique Dumont
2006-10-05 21:18 ` [Alsa-user] Pb with simultaneous SATA and ALSA I/O Lee Revell
2006-10-07 12:03 ` Dominique Dumont
2006-10-07 17:08 ` Lee Revell
2006-10-05 21:52 ` Alan Cox
2006-10-05 21:45 ` Lee Revell
2006-09-25 14:38 ` Lennart Sorensen
2006-09-25 14:50 ` Lee Revell
2006-09-26 14:29 ` Thierry Vignaud
2006-09-26 14:37 ` Dominique Dumont
2006-09-26 14:44 ` Lee Revell
2006-10-04 10:45 ` [Alsa-user] " Dominique Dumont
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