fernandoc1 wrote:However isn't there an way to quickly optimize the whole system to my processor?
I don't care about costumizations, only about performance.
The answer to this varies from person to person, but it's been a long-held observation of Gentoo users that the little smidgen of performance that you might
by rebuilding everything is more than wiped out by the time and trouble involved in building the packages.
Most of us that use portage as our primary package management system do so for the increased flexibility, and the ability to reduce dependencies through USE flags, and also the plain fun and satisfaction of having such fine-grained control over the packages in your system.
You can gain far more speed by cutting down on the number of applets and other programs that are automatically loaded.
Back when portage was Sabayon's main package management system, Wolfden wrote an excellent guide for getting your system stabilized on portage from a Sabayon installation: HOWTO: Unoffical Guide To World Update
For me personally, I also use the guide for switching to stable packages (this is done in a manner that keeps currently installed testing packages, but won't upgrade until a package goes stable): HOWTO: Switch from Test to Stable Packages
As mentioned in Wolfden's guide, a good start is to stablize the 'system' package set first, then go on to stabilizing 'world'.