Bug#343201: cupsys: CUPS eats up CPU

[Jerome Warnier <jwarnier@beeznest.net>]

Package: cupsys
Version: 1.1.23-10
Severity: important

I upgraded a Woody system to Sarge recently. This is a dual-cpu (AMD
Athlon MP), if it matters.
I read the other similar bug reports, but they are not like mine.
Now CUPS constantly eats 15-20% CPU, even when not doing anything.
Setting browsing to on or off does not change anything (while I intend
to use browsing in the end).
There are around 30 CUPS clients (Debian Sarge) using it, but not printing
all the time.

I attached strace to the "cupsd" process, and here is what I get:
aldebaran:/etc/netatalk# strace -p 7756 -c
Process 7756 attached - interrupt to quit
Process 7756 detached
% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
 57.99    0.338424           8     44343           time
 34.81    0.203131          24      8586           send
  5.12    0.029908          17      1799           select
  1.11    0.006503          30       216           recv
  0.77    0.004469          38       118           write
  0.08    0.000487          41        12           close
  0.07    0.000416          35        12           accept
  0.01    0.000074           6        12           setsockopt
  0.01    0.000073           3        24           fcntl64
  0.01    0.000047          47         1           sendto
  0.01    0.000033           3        12           getrlimit
  0.00    0.000012          12         1           recvfrom
------ ----------- ----------- --------- --------- ----------------
100.00    0.583577                 55136
total

As you can see, there are a lot of calls to syscall "time", while on
anotheri Debian Sarge PC, there is no such behaviour noticeable.

-- System Information:
Debian Release: 3.1
Architecture: i386 (i686)
Kernel: Linux 2.6.8-2-686
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)

Versions of packages cupsys depends on:
ii  adduser                3.63              Add and remove users and groups
ii  debconf                1.4.30.13         Debian configuration management sy
ii  libc6                  2.3.2.ds1-22      GNU C Library: Shared libraries an
ii  libcupsimage2          1.1.23-10         Common UNIX Printing System(tm) - 
ii  libcupsys2-gnutls10    1.1.23-10         Common UNIX Printing System(tm) - 
ii  libgnutls11            1.0.16-13.1       GNU TLS library - runtime library
ii  libpam0g               0.76-22           Pluggable Authentication Modules l
ii  libpaper1              1.1.14-3          Library for handling paper charact
ii  libslp1                1.0.11a-2         OpenSLP libraries
ii  patch                  2.5.9-2           Apply a diff file to an original
ii  perl-modules           5.8.4-8           Core Perl modules
ii  xpdf-utils             3.00-13           Portable Document Format (PDF) sui
ii  zlib1g                 1:1.2.2-4.sarge.2 compression library - runtime

-- debconf information:
  cupsys/raw-print: true
  cupsys/backend: ipp, lpd, parallel, socket, usb