I have MAKEOPTS="-j5" in make.conf, but while building mysql-workbench-6.1.7, it seems that only 1 cpu core is fully used in my 4-core system, thus, taking more than 1 hour to build. emerge --info Portage 2.2.8-r1 (default/linux/amd64/13.0/desktop/kde, gcc-4.7.3, glibc-2.17, 3.15.2-gentoo x86_64) ================================================================= System uname: Linux-3.15.2-gentoo-x86_64-Intel-R-_Core-TM-2_Quad_CPU_Q9550_@_2.83GHz-with-gentoo-2.2 KiB Mem: 8169212 total, 2922132 free KiB Swap: 8388600 total, 8388600 free Timestamp of tree: Tue, 01 Jul 2014 13:00:01 +0000 ld GNU ld (GNU Binutils) 2.23.2 app-shells/bash: 4.2_p45 dev-java/java-config: 2.2.0 dev-lang/python: 2.7.6, 3.2.5-r3, 3.3.3 dev-util/cmake: 2.8.12.2 dev-util/pkgconfig: 0.28 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.12.4 sys-apps/sandbox: 2.6-r1 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.9.6-r3, 1.10.3, 1.11.6, 1.12.6, 1.13.4 sys-devel/binutils: 2.23.2 sys-devel/gcc: 4.7.3-r1 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.13 (virtual/os-headers) sys-libs/glibc: 2.17 Repositories: gentoo Local-overlay-Vasilis ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA skype-eula Google-TOS AdobeFlash-11.x Oracle-BCLA-JavaSE skype-4.0.0.7-copyright TeamViewer PUEL google-chrome" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=core2 -mcx16 -msahf -mno-movbe -mno-aes -mno-pclmul -mno-popcnt -mno-abm -mno-lwp -mno-fma -mno-fma4 -mno-xop -mno-bmi -mno-bmi2 -mno-tbm -mno-avx -mno-avx2 -mno-sse4.2 -msse4.1 -mno-lzcnt -mno-rdrnd -mno-f16c -mno-fsgsbase --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=6144 -mtune=core2" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.3/ext-active/ /etc/php/apache2-php5.4/ext-active/ /etc/php/apache2-php5.5/ext-active/ /etc/php/cgi-php5.3/ext-active/ /etc/php/cgi-php5.4/ext-active/ /etc/php/cgi-php5.5/ext-active/ /etc/php/cli-php5.3/ext-active/ /etc/php/cli-php5.4/ext-active/ /etc/php/cli-php5.5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -pipe -march=core2 -mcx16 -msahf -mno-movbe -mno-aes -mno-pclmul -mno-popcnt -mno-abm -mno-lwp -mno-fma -mno-fma4 -mno-xop -mno-bmi -mno-bmi2 -mno-tbm -mno-avx -mno-avx2 -mno-sse4.2 -msse4.1 -mno-lzcnt -mno-rdrnd -mno-f16c -mno-fsgsbase --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=6144 -mtune=core2" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs candy cgroup config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="ftp://ftp.ntua.gr/pub/linux/gentoo/ ftp://gentoo.mirror.dkm.cz/pub/gentoo/ ftp://gd.tuwien.ac.at/opsys/linux/gentoo/ ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo ftp://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/ ftp://sunsite.informatik.rwth-aachen.de/pub/Linux/gentoo ftp://ftp.snt.utwente.nl/pub/os/linux/gentoo ftp://ftp.free.fr/mirrors/ftp.gentoo.org/ ftp://gentoo.mirror.web4u.cz/ ftp://91.121.124.139/gentoo-distfiles/" LDFLAGS="-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed" MAKEOPTS="-j5" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" USE="256-color X a52 aac acl acpi additions admin aio alsa amd64 apache2 apng archive asf bash-completion bcmath branding bzip2 bzlib cairo calendar caps cdr charconv chm cli consolekit contrast corefonts cracklib crypt cryptsetup css ctype cups cupsddk curl cxx dba dbus dcc_video declarative device-mapper dia dmi dri dts dvd dvdr dvdread ebook effects emboss encode exif expat extensions extras faac faad fam fastcgi fat fbcon ffmpeg fftw filter firefox firefox3 flac fontconfig foomaticdb fpm ftp g3dvl gallium gcj gd gdbm gif gimp gimpprint git glib glx gmp gnomedb gnutls gocr gphoto2 gpm graphviz gs gstreamer gtk hddtemp hotpixels howl iconv icu id3tag imagemagick imap imlib innodb inotify intl iso14755 jabber java java6 javascript jpeg jpeg2k json kde kdeenablefinal kdehiddenvisibility kipi lame lastfm lcdfilter lcms lensfun libkms libnotify libsamplerate libwww lm_sensors lzma mad madwifi maildir mailwrapper maps matroska mdadm melt mime minizip mmap mmx mmxext modules motif mozbranding mozdevelop mozilla mozsvg mp3 mp4 mpeg mplayer mpm-worker multilib multiuser mysql mysqli mysqlnd ncurses newspr nlpsolver nls no-old-linux nodrm nomalloccheck nptl nsplugin ntfs ntfsprogs objc offensive ofx ogg oldpim opengl openmp optimization oqgraph osmesa pam pango pcmcia pcntl pcre pdf pdfimport pdo pear phonon php plasma plotutils pmu png policykit posix postgres ppds python qt3support qt4 quicktime rar raw rdesktop rdoc readline redeyes reports romio rpc sasl scanner script sdl semantic-desktop server session sha512 sharedext sharedmem simplexml smp sndfile soap sockets speex spell sphinx spreadsheet sqlite sqlite3 srt sse sse2 sse3 sse4_1 ssl ssse3 startup-notification subtitles subversion svg symlink sysfs syslog sysvipc tcltk tcpd templates tetex theora thin-splines threads tidy tiff tokenizer tordns truetype tty-helpers udev udisks unicode upower urandom usb userlocales v4l vda vdpau video vmware-tools vmware_guest_linux vmware_guest_windows vncviewer vorbis vpx wddx webm windeco wv wxgtk1 wxwidgets x264 xcomposite xetex xft xine xinerama xml xmlreader xmlrpc xmlwriter xmp xorg xpdf-headers xpm xprint xscreensaver xsl xslt xv xvid xvnc zip zlib" ABI_X86="64" ALSA_CARDS="hda-intel" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_core authn_dbm authn_file authz_core authz_dbm authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mime mime_magic negotiation rewrite setenvif socache_shmcb speling status unique_id userdir usertrack vhost_alias version unixd" APACHE2_MPMS="prefork" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" ENLIGHTENMENT_MODULES="backlight battery clock comp conf-applications conf-dialogs conf-display conf-edgebindings conf-interaction conf-intl conf-keybindings conf-menus conf-paths conf-performance conf-randr conf-shelves conf-theme conf-window-manipulation conf-window-remembers cpufreq dropshadow everything fileman fileman-opinfo gadman ibar ibox illume2 mixer msgbus notification pager quickaccess start syscon systray tasks temperature tiling winlist wizard xkbswitch" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-minimizer nlpsolver" LINGUAS="en en_GB en_US el" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-3 php5-4 php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2 python3_3" RUBY_TARGETS="ruby20" SANE_BACKENDS="snapscan" USERLAND="GNU" VIDEO_CARDS="nvidia" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, SYNC, USE_PYTHON
*** This bug has been marked as a duplicate of bug 507838 ***
