Adding "march" & "mtune" to /etc/make.conf

Carmel carmel_ny at
Tue Feb 2 23:52:44 UTC 2010

I read somewhere that adding the following to the /etc/make.conf file
would improve system performance:


Is there any truth to this? I an running 32-bit I386 Freebsd on a
64-bit processor. The main reason being that the is (was) no native
64-bit drivers for nVidia video cards. In any case, I thought 'mtune'
defaults to what "march" is set to so why enter both?


carmel_ny at


You should never bet against anything in science at odds of more than
about 10^12 to 1.

	Ernest Rutherford

More information about the freebsd-questions mailing list