[SMP] real multi core exploitation

[infogerance]

Hi,
I have a core 2 duo CPU.
I made a SMP capable kernel (up to 2 CPUs).
Then I booted on it.
MAKEOPTS="-j3".
# emerge -e system

I randomly have a look at the "top" output, and noticed that when compiling big softwares (Perl,...) only one "cc1" is running at a time (on one CPU).
The other one is idle. Waste of time!
What would be a solution to make "make" to really use simultaneously multiple CPUs?

[theotherjoe]

Assuming that you build your kernel properly and
you booted your new kernel, have a look into
dmesg and check if both cpus are brought up.
Another possibilty to check:
ls /sys/devices/system/cpu
there should be two subdirs (cpu0, cpu1) with
entries.

regarding MAKEOPTS, you may want to set your
parameter to -j4 or -j5. parallel makes are working but
there are some packages which are filtering the -j option,
esp. the GCC in some parts.

[nixnut]

Moved from Installing Gentoo to Kernel & Hardware.
Not about getting gentoo installed, so moved here.
_________________
Please add [solved] to the initial post's subject line if you feel your problem is resolved. Help answer the unanswered

talk is cheap. supply exceeds demand

[infogerance]