Depuis portage-2.2_rc2, de nouvelles fonctions ont été intégrées.

–jobs JOBS
Specifies the number of packages to build simultaneously.
Also see the related –load-average option.

–keep-going
Continue as much as possible after an error. When an error
occurs, dependencies are recalculated for remaining packages
and any with unsatisfied dependencies are automatically
dropped. Also see the related –skipfirst option.

–load-average LOAD
Specifies that no new builds should be started if there are
other builds running and the load average is at least LOAD (a
floating-point number). This option is recommended for use in
combination with –jobs in order to avoid excess load. See
make(1) for information about analogous options that should
be configured via MAKEOPTS in make.conf(5).

Ces options permettent de paralleliser les opérations et ainsi de tirer de parti des processeurs multi core. Les versions de portage intégrants ces fonctions ne sont disponibles qu’en ~arch pour le moment.