From: bugtrack@alsa-project.org
To: alsa-devel@alsa-project.org
Subject: [ALSA - driver 0001869]: Playing surround sound produces 100% CPU load
Date: Sat, 29 Jul 2006 03:01:32 +0200 [thread overview]
Message-ID: <74e4537ac68faa6bc509d71b53a2c347@bugtrack.alsa-project.org> (raw)
A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1869>
======================================================================
Reported By: bitmage2
Assigned To:
======================================================================
Project: ALSA - driver
Issue ID: 1869
Category: CORE - pcm
Reproducibility: always
Severity: minor
Priority: normal
Status: new
Distribution: SuSE Linux 10.0
Kernel Version: Linux 2.6.13-15.8-default #1 Tue Feb 7 11:07:24 UTC
2006 i686 athlon i386 GNU/Linux
======================================================================
Date Submitted: 02-23-2006 00:48 CET
Last Modified: 07-29-2006 03:01 CEST
======================================================================
Summary: Playing surround sound produces 100% CPU load
Description:
I am using the CS46xx with a Hercules Gametheater XP 5.1 . It plays back
stereo without problems.
I wanted to use the rest of my 5.1 speaker set, so for a test I ran the
speaker-test program. Running it without parameters or with 2 or 4.0
channels works also fine. So far so good.
But when I run it with 5.0 channels or 5.1 channels the CPU load of
speaker-test goes to 100%. I'll show the output of top along with the
command lines below (for the 2.0 and 5.1 case) in the "Additional
Information" box.
======================================================================
----------------------------------------------------------------------
Raymond - 07-26-06 10:27
----------------------------------------------------------------------
#define DSP_MAX_PCM_CHANNELS 32
#define DSP_MAX_SRC_NR 14
max. instances limited by pcm_channels
stereo 31 * 1 <= ( 32 - 1 )
surround40 15 * 2 <= ( 32 - 1 )
surround51 10 * 3 <= ( 32 - 1 )
----------------------------------------------------------------------
Raymond - 07-29-06 03:01
----------------------------------------------------------------------
How many instances of stereo can be run without distortion ?
Issue History
Date Modified Username Field Change
======================================================================
02-23-06 00:48 bitmage2 New Issue
02-23-06 00:48 bitmage2 Distribution => SuSE Linux 10.0
02-23-06 00:48 bitmage2 Kernel Version => Linux
2.6.13-15.8-default #1 Tue Feb 7 11:07:24 UTC 2006 i686 athlon i386 GNU/Linux
02-23-06 00:54 bitmage2 Note Added: 0008164
02-23-06 00:55 bitmage2 Issue Monitored: bitmage2
07-11-06 05:58 Raymond Note Added: 0010964
07-14-06 20:57 bitmage2 Note Added: 0011004
07-14-06 20:59 bitmage2 Note Added: 0011005
07-14-06 21:25 rlrevell Note Added: 0011006
07-14-06 22:40 bitmage2 Note Added: 0011008
07-14-06 22:57 rlrevell Note Added: 0011009
07-15-06 01:28 bitmage2 Note Added: 0011013
07-15-06 01:45 rlrevell Note Added: 0011014
07-15-06 05:09 Raymond Note Added: 0011017
07-15-06 07:17 Raymond Note Edited: 0011017
07-23-06 11:34 bitmage2 Note Added: 0011183
07-23-06 13:49 Raymond Note Added: 0011185
07-23-06 14:14 Raymond Note Added: 0011186
07-23-06 14:16 Raymond Note Deleted: 0011186
07-23-06 15:04 bitmage2 Note Added: 0011189
07-24-06 04:19 Raymond Note Added: 0011209
07-24-06 05:04 Raymond Note Edited: 0011209
07-24-06 20:38 bitmage2 Note Added: 0011214
07-25-06 03:00 Raymond Note Added: 0011223
07-25-06 03:03 Raymond Note Edited: 0011223
07-25-06 03:05 Raymond Note Edited: 0011223
07-25-06 10:05 Raymond Note Edited: 0011223
07-25-06 10:13 Raymond Note Edited: 0011223
07-25-06 21:53 bitmage2 Note Added: 0011232
07-26-06 02:03 Raymond Note Added: 0011235
07-26-06 02:09 Raymond Note Edited: 0011235
07-26-06 08:41 bitmage2 Note Added: 0011245
07-26-06 10:27 Raymond Note Added: 0011247
07-29-06 03:01 Raymond Note Added: 0011295
======================================================================
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys -- and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
next reply other threads:[~2006-07-29 1:01 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-29 1:01 bugtrack [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-08-01 8:46 [ALSA - driver 0001869]: Playing surround sound produces 100% CPU load bugtrack
2006-08-01 7:36 bugtrack
2006-08-01 6:15 bugtrack
2006-08-01 2:15 bugtrack
2006-08-01 0:40 bugtrack
2006-07-31 21:16 bugtrack
2006-07-30 1:06 bugtrack
2006-07-26 8:27 bugtrack
2006-07-26 6:41 bugtrack
2006-07-26 0:03 bugtrack
2006-07-25 19:53 bugtrack
2006-07-25 1:00 bugtrack
2006-07-24 18:38 bugtrack
2006-07-24 2:19 bugtrack
2006-07-23 13:04 bugtrack
2006-07-23 12:14 bugtrack
2006-07-23 11:49 bugtrack
2006-07-23 9:34 bugtrack
2006-07-15 3:09 bugtrack
2006-07-14 23:45 bugtrack
2006-07-14 23:28 bugtrack
2006-07-14 20:57 bugtrack
2006-07-14 20:40 bugtrack
2006-07-14 19:25 bugtrack
2006-07-14 18:59 bugtrack
2006-07-14 18:57 bugtrack
2006-07-11 3:58 bugtrack
2006-02-22 23:54 bugtrack
2006-02-22 23:48 bugtrack
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=74e4537ac68faa6bc509d71b53a2c347@bugtrack.alsa-project.org \
--to=bugtrack@alsa-project.org \
--cc=alsa-devel@alsa-project.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox