Jeremy Huntwork wrote:
Because it's significantly faster.
Not to be a PITA, but I was curious how much faster it would be. I did
two LiveCD 6.1.1-newmake builds, one after the other. For each build,
deleting all in /mnt/lfs except /mnt/lfs/sources, meaning that all
packages are already available and no downloads occur. Then a fresh
checkout of the 6.1.1-newmake repo. The system is a Celeron 2.4Ghz,
512MB memory, 1GB swap partition, 7200rpm ide hdd.
WITHOUT -j3 flag (PM variable deleted, fixed -j3 flag in thunderbird and
firefox .mozconfig removed):
real 395m50.360s
user 320m3.812s
sys 51m22.493s
WITH -j3 flag (exactly how it is in the svn repo):
real 401m30.983s
user 321m16.761s
sys 52m46.106s
I don't see any advantage in using it on a uniproc machine. Dual proc
machines are a different story, of course. If anyone thinks we should
change it, I can test speeds on some other systems I have laying around
and post them also.
Thanks.
Justin
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