David O'Brien wrote/schrieb (Saturday, March 18, 2000):
| On Sat, Mar 18, 2000 at 03:18:45AM +0100, Thomas Köllmann wrote:
| > | Perhaps this is a bit off topic, but can the pentium optimisations be
| > | used for AMD K6 processors?
| >
| > I did a `make world' yesterday with
| > CFLAGS= -O2 -pipe -march=pentium
| > COPTFLAGS= -O2 -pipe -march=pentium
| ..snip..
| > If it doesn't I'll probably try `-03 -pipe -march=pentium' come next
|
| What are people hoping to get by doing this? Are you actually doing a
| scientific performance evaluation between the various optimization
| options???
This is just playing, the machine I was talking about has it's
backups in order and can afford downtime; I mentioned that already,
and I was only answering somebody's question.
| Are are people just being macho, and thinking they are
| getting all this non-existent performance increase?
You _are_ feeling strong about this, aren't you? :-)
| "-O" is the only globally safe optimization on FreeBSD. -O2, etc..
| causes various problems for various people in various ports, and parts of
| /usr/src/. If people are using these options just for fun, that is fine,
Yes, just for fun, David, just for fun.
| BUT if you experience *any* problems with compiling using -O2, etc..
| don't bug this list -- go bug the GCC people.
Are they a bunch of machos themselves? :-)
Thanks for your point of view.
Gruß
- Thomas
--
Walking to the car, she takes his hand and puts it, for a moment,
lightly between her moving legs. Roger's heart grows erect, and comes.
That's really how it feels. -- Thomas Pynchon, Gravity's Rainbow
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