Re: [gentoo-user] Hardware upgrade and Gentoo

[Dale <dalek1967@bellsouth.net>]

[-- Attachment #1: Type: text/plain, Size: 1599 bytes --]

Volker Armin Hemmann wrote:
> On Mittwoch, 18. Juli 2007, Daniel da Veiga wrote:
>   
>> On 7/18/07, Alex Schuster <wonko@wonkology.org> wrote:
>>     
>>> Another method, which I would use, would be to change your CFLAGS to what
>>> you would like for the new processor, but use mtune= instead of march=.
>>> This will also optimize for the cpu, but the code will run on any x86
>>> CPU. emerge world --emptytree to re-compile everything, then switch your
>>> hardware. This will give you flexibility, at the cost of lesser
>>> optimization. Depends on how you use your system, most applications will
>>> not show a noticeable speed ddifference I guess.
>>> You could also change to march= later, when the system ist up, and
>>> re-compile everything again to get full optimization.
>>>       
>> Oh, that's good to know, I guess that's the best option, since after
>> the system is up and running I can do whatever optimizations it needs,
>> as long as I'm able to boot and work with it in the new hardware.
>>
>> Tonight I'll start the (long and boring) process of recompiling the
>> whole stuff with "-mtune" instead of "-march".
>>
>> Thanks to all that replied so far... Maybe more suggestions comming?!
>>     
>
> instead of two emerge --emptytree it would be faster to just nuke the 
> installation....
>   

I agree.  Just back up /etc, make a copy of your world file and any
other config files you may need and start from scratch.  At least then
you KNOW for sure where you started from and that something didn't get
missed somewhere.

Oh, don't forget /home either.

Dale

:-)  :-)  :-)

[-- Attachment #2: Type: text/html, Size: 2180 bytes --]