Bug 30916 – Using libsdl-1.2.6 results in 100% CPU usage.

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Balki 2003-10-11 09:51:15 UTC]

Upgrading to libsdl-1.2.6-r1 causes 100% of CPU to be used when this library is
called. This is not evident in libsdl-1.2.5-r2.   E.g.  
1) Running frozen-bubble against 1.2.6-r1 results in 100% CPU, against 1.2.5-r2
this goes away.
2) Using pygame.  Enter a python session and enter "import pygame", then
"pygame.mixer.init()" - this results in 100%CPU against 1.2.6-r1.


Reproducible: Always
Steps to Reproduce:
1.Start an interactive python session type "python"
2.type "import pygame"
3.type "pygame.mixer.init()" to get 100% CPU usage.
4. type "pygame.mixer.quit()" to stop 100% CPU usage.




Sound card: Creative Labs SoundBlaster 5.1
pygame-1.5.6
sdl-mixer-1.2.5-r1
alsa-lib-0.9.2
kernel: gentoo-sources-2.4.20-r7

[Comment 1 SpanKY 2003-10-11 12:29:28 UTC]

you forgot `emerge info` ...

did you try re-emerging the sdl perl packages after upgrading to 1.2.6 ?
 i can run frozen-bubble w/sdl-1.2.6 over here w/out any problems

[Comment 2 Balki 2003-10-12 08:42:45 UTC]

Here's the emerge info:
Portage 2.0.49-r10 (default-x86-1.4, gcc-3.2.3, glibc-2.3.2-r1, 2.4.20-gentoo-r7)
=================================================================
System uname: 2.4.20-gentoo-r7 i686 AMD Athlon(tm) processor
Gentoo Base System version 1.4.3.10p1
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CFLAGS="-O3 -march=athlon -funroll-loops -fomit-frame-pointer -pipe"
CHOST="i686-pc-linux-gnu"
COMPILER="gcc3"
CONFIG_PROTECT="/etc /var/qmail/control /usr/kde/2/share/config /usr/kde/3/share/config
/usr/X11R6/lib/X11/xkb /usr/share/config"
CONFIG_PROTECT_MASK="/etc/gconf /etc/env.d"
CXXFLAGS="-O2 -mcpu=i686 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="sandbox ccache autoaddcvs"
GENTOO_MIRRORS="http://www.mirror.ac.uk/sites/www.ibiblio.org/gentoo/ http://ftp.belnet.be/mirror/rsync.gentoo.org/gentoo/
http://www.ibiblio.org/gentoo"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="x86 oss apm avi encode foomaticdb gif jpeg libg++ libwww mad mikmod
mpeg ncurses nls pdflib quicktime spell xml2 xmms xv zlib gdbm berkdb slang
readline svga sdl tcpd ssl perl imlib gtk motif scanner alsa cdr crypt cups
dvd esd evo gnome gpm gtk2 gtkhtml java joystick mozilla mysql oggvorbis
opengl pda pam png postgres python qt samba tcltk truetype X -kde -arts"
 
I've not tried recompiling sdl-perl yet, but I assume this would not affect
the pygame side of things anyway.

[Comment 3 SpanKY 2003-10-18 00:04:18 UTC]

could you try this ?
export EXTRA_ECONF="--disable-nasm"
emerge libsdl

[Comment 4 Balki 2003-10-18 09:23:37 UTC]

Gave that a go.  No luck I'm afraid.

Tried recompiling with nasm (0.99.38) enabled, still the same problem.

[Comment 5 Balki 2003-10-19 13:35:48 UTC]

Hmmm.  Just checked again (after a reboot). All seems fine now.