The problem does not occur with -r1 or 0.9.7. I also get the same hard lockup kdelibs-3.5.4-r2 if I add "-mtune=7450" to CFLAGS and with imagemagick-6.2.9.5-r1 if I change "-O" to "-Os". My system is a dual-processor(7455) with preemption enabled. I've recently been testing distcc with an x86 and a cross-compiler. kdelibs did compile with distcc disabled, MAKEOPTS="-j3" and with distcc enabled, MAKEOPTS="-j6", and NOT "-mtune=7450". Portage 2.1.2_pre1 (default-linux/ppc/ppc32/2006.0/G4, gcc-4.1.1/vanilla, glibc-2.4-r3, 2.6.18-rc6 ppc) ================================================================= System uname: 2.6.18-rc6 ppc 7455, altivec supported Gentoo Base System version 1.12.4 Last Sync: Fri, 22 Sep 2006 14:30:01 +0000 distcc 2.18.3 powerpc-unknown-linux-gnu (protocols 1 and 2) (default port 3632) [enabled] app-admin/eselect-compiler: 2.0.0_rc2-r1 dev-java/java-config: 1.3.7, 2.0.29 dev-lang/python: 2.4.3-r3 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: [Not Present] dev-util/confcache: [Not Present] sys-apps/sandbox: 1.2.18.1 sys-devel/autoconf: 2.13, 2.60 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2 sys-devel/binutils: 2.17 sys-devel/gcc-config: 1.3.13-r3 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.16 ACCEPT_KEYWORDS="ppc ~ppc" AUTOCLEAN="yes" CBUILD="powerpc-unknown-linux-gnu" CFLAGS="-O -mcpu=G4 -maltivec -mabi=altivec -fno-strict-aliasing -pipe -mlong-double-128" CHOST="powerpc-unknown-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/eselect/compiler /etc/gconf /etc/java-config/vms/ /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c" CXXFLAGS="-O -mcpu=G4 -maltivec -mabi=altivec -fno-strict-aliasing -pipe -mlong-double-128" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distcc distlocks metadata-transfer sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" LINGUAS="en_US" MAKEOPTS="-j6" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude='/distfiles' --exclude='/local' --exclude='/packages'" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage /usr/local/overlays/migrated-java-experimental-overlay /usr/local/overlays/gcj-overlay" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="ppc X alsa altivec apache2 apm berkdb bitmap-fonts bogofilter bonobo cairo cdr cli crypt cups dbus dlloader dri dvd dvdr eds elibc_glibc emboss encode esd foomaticdb fortran gcj gdbm gif glitz gnome gpm gstreamer gtk gtkhtml hal imlib input_devices_evdev input_devices_keyboard input_devices_mouse ipv6 isdnlog java jpeg kde kdehiddenvisibility kernel_linux ldap libg++ libwww linguas_en_US mad mikmod motif mozilla mp3 mpeg ncurses nls nptl nptlonly ogg opengl pam pcre pdflib perl png pppd python qt qt3 qt4 quicktime readline reflection ruby sdl seamonkey session spell spl ssl svg tcpd tetex tiff truetype truetype-fonts type1-fonts udev unicode userland_GNU video_cards_ati video_cards_radeon vorbis xfs xml xmms xorg xprint xv zlib" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Can emerge libquicktime-0.9.9 with distcc disabled. Cannot with distcc enabled, though if I set MAKEOPTS="-j3" the system doesn't freeze only emerge does.
I have reconfigured the kernel for a server latency and preemption model, ie CONFIG_HZ_250=y CONFIG_PREEMPT_NONE=y from a low-latency desktop and CONFIG_HZ_1000=y. That seems to have fixed the problem with distcc.
The sole exception is kdelibs-3.5.4-r2 and -mtune=7450. That still causes a hard lockup.
