cvs commit: ports/devel/avr-libc Makefile
Joerg Wunsch
j at uriah.heep.sax.de
Mon May 19 07:00:49 PDT 2003
As Alexander Leidinger wrote:
> People which don't care about some few percent more performance
> don't need the default CPUTYPE, those who care will figure out how
> to do it.
That's exactly my point. Heck, when the default kernel was released
of the burden to still support 80386 CPUs (where it was known that a
kernel that must support these CPUs is less efficient than one that
can concentrate on 80486+), the overall "make world" speedup gained by
it was reported to be as few as 2 %. So i don't see why to bother
with any -mcpu stuff by default. Except for few compute-intensive
tasks, it will only gain a few percent at best. For populare AMD
CPUs, the speedup is even likely to become negative...
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
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