Re[2]: perl DBD buidl problems

[Corin Langosch <corinl@gmx.de>]

Hi!

sorry for replying to the wrong answer, but i lost
the other mail of this thread sent to me ;-(

my system is the latest version, i just installed it as
described on http://alioth.debian.org/docman/view.php/1314/21/debian-amd64-howto.html

i already compiled my own kernel without 32bit emulation, so
it must a be pure64 bit installation? i also formatted the
discs before installing anyhting.

Corin

Wednesday, May 26, 2004, 3:15:46 PM, you wrote:
FK> Corin Langosch wrote:
>> 
>> by the way: does it hurt to tune the kernel makefile with
>> options like "-O3 -mmmx -msse -msse2" etc...? why isnt this
>> the default, doesn't it speed up the kernel a lot?

FK> x86-64 uses sse/sse2 for parameter passing and float/double arithmetics 
FK> by default, so these switches are obsolete. However, I guess there is 
FK> very little floating point arithmetics in the kernel and prefetch 
FK> optimization isn't done.

FK> 3dnow is deprecated, mmx almost useless.

FK> So, it doesn't hurt, it doesn't help.