Bug#261869: sound-juicer: Slow operation when jitter is high

[David Pettersson]

Package: sound-juicer
Version: 0.5.12-1
Severity: normal

When ripping a CD with a lot of jitter[0], Sound Juicer is anything from 1
to 5 times slower than cdparanoia for some reason (often reading discs
at 0.2x-0.4x when cdparanoia reads the same disc in realtime).

Have tried using the --gst-debug flags to determine whether anything
serious is wrong, but I cannot see anything suspicious[1].

Steps to reproduce:

 1 - Insert disc that has a lot of jitter. See [0].
 2 - Begin extracting.
 3 - Observe how the reading speed always is less than 1.

Machine is a AMD Athlon XP 2500+ with 256 MB RAM, and a Samsung 52x24x52
CD-RW drive. There is no unnecessary swapping. It does not matter what
final format I choose either.

If there is anything I can do further to help determine what the problem
is, please let me know. Thanks.

David

 [0] I consider "a lot of jitter" to be when cdparanoia leaves dashes
     after the arrow, and the status smiley always is a :-|. There are
     no reading errors though. CD is around 10 years old, and plays
     fine in any CD player I have.

 [1] The progress bar in Sound Juicer is updated once every 5 or 6
     seconds. With debug level 5 on, I can see that there is a lot of
     calls to the scheduler for some reason, and occasional calls to
     cdparanoia:src. Perhaps the already low throughput from the
     cdparanoia source is causing a lot of overhead, making everything
     slower?

-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.7
Locale: LANG=sv_SE, LC_CTYPE=sv_SE

Versions of packages sound-juicer depends on:
ii  gconf2                    2.6.2-1        GNOME configuration database syste
ii  gstreamer0.8-cdparanoia   0.8.2-3        cdparanoia plugin for GStreamer
ii  gstreamer0.8-flac         0.8.2-3        FLAC plugin for GStreamer
ii  gstreamer0.8-misc         0.8.2-3        Collection of various GStreamer pl
ii  gstreamer0.8-vorbis       0.8.2-3        Vorbis plugin for GStreamer
ii  libart-2.0-2              2.3.16-6       Library of functions for 2D graphi
ii  libatk1.0-0               1.6.1-2        The ATK accessibility toolkit
ii  libbonobo2-0              2.6.2-5        Bonobo CORBA interfaces library
ii  libbonoboui2-0            2.6.1-1        The Bonobo UI library
ii  libc6                     2.3.2.ds1-13   GNU C Library: Shared libraries an
ii  libgcc1                   1:3.4.1-3      GCC support library
ii  libgconf2-4               2.6.2-1        GNOME configuration database syste
ii  libglade2-0               1:2.4.0-1      Library to load .glade files at ru
ii  libglib2.0-0              2.4.4-1        The GLib library of C routines
ii  libgnome2-0               2.6.1-8        The GNOME 2 library - runtime file
ii  libgnomecanvas2-0         2.6.1.1-2      A powerful object-oriented display
ii  libgnomeui-0              2.6.1.1-3      The GNOME 2 libraries (User Interf
ii  libgnomevfs2-0            2.6.1.1-5      The GNOME virtual file-system libr
ii  libgstreamer0.8-0         0.8.3-3        Core GStreamer libraries, plugins,
ii  libgtk2.0-0               2.4.4-1        The GTK+ graphical user interface 
ii  libice6                   4.3.0.dfsg.1-6 Inter-Client Exchange library
ii  libmusicbrainz4           2.1.1-3        Second generation incarnation of t
ii  liborbit2                 1:2.10.2-1.1   libraries for ORBit2 - a CORBA ORB
ii  libpango1.0-0             1.4.0-4        Layout and rendering of internatio
ii  libpopt0                  1.7-4          lib for parsing cmdline parameters
ii  libsm6                    4.3.0.dfsg.1-6 X Window System Session Management
ii  libstdc++5                1:3.3.4-5      The GNU Standard C++ Library v3
ii  libxml2                   2.6.11-2       GNOME XML library
ii  scrollkeeper              0.3.14-8       A free electronic cataloging syste
ii  xlibs                     4.3.0.dfsg.1-6 X Window System client libraries m
ii  zlib1g                    1:1.2.1.1-5    compression library - runtime

-- no debconf information