> Watching /proc/cpuinfo when compiling never shows the frequency reaching > above > 2500: > > cpu MHz : 2495.389 > > cpu MHz : 2495.410 > > cpu MHz : 2495.389 > > cpu MHz : 2495.416 > > > I can't think this is some hardcoded BIOS limitation, otherwise how come > the > minimal-CD was boosting the frequency all the time to the point of > shutting > down the laptop. Switching governor to 'performance' as the minimal-CD > has it > set, or to userspace/schedutil has no effect to the maximum frequency the > CPU > displays. > > Any ideas how I can activate the boost states on this CPU, or what else I > could look into to unlock its potential and speed up my emerge?
IIRC boost states work by boosting a single core when the other cores are idle, so you wouldn't expect it to kick in on a -jN emerge. You could try closing all other programs and temporarily running -j1 as an experiment to see if it kicks in at all. If it doesn't work then i'd look at BIOS updates. Have you included the microcode in the kernel?
