Re: [gentoo-user] 2.6.28-gentoo sources quite sluggish on Dell Inspiron 8100 / 1GHz PIII

[Paul Hartman <paul.hartman+gentoo@gmail.com>]

On Thu, Jan 22, 2009 at 3:35 PM, Dale <rdalek1967@gmail.com> wrote:
> Paul Hartman wrote:
>> On Wed, Jan 21, 2009 at 9:05 PM, Dale <rdalek1967@gmail.com> wrote:
>>
>>> Volker Armin Hemmann wrote:
>>>
>>>> On Donnerstag 22 Januar 2009, Dan Farrell wrote:
>>>>
>>>>
>>>>> Hi all,
>>>>>
>>>>> I recently updated my dell Inspirion 8100's software after I found to
>>>>> my suprise I could no longer play video fast enough to watch.  I did a
>>>>> kernel upgrade from 2.6.24 to 2.6.28, with a number of
>>>>> reconfigurations, including moving from madwifi to in-kernel ath5k.
>>>>> Also updated nvidia-drivers to go along with the new system.
>>>>>
>>>>> Now my system is extremely sluggish.  It updates the screen very slowly
>>>>> in X and CPU performance is noticably slower without X running too.
>>>>> WiFi speed is dismal.
>>>>>
>>>>> I tried to remove all cruft and extras from the kernel, but I haven't
>>>>> managed to improve matters yet.  Since it now takes hours to update the
>>>>> system, I was hoping someone might have and idea as to what the cause
>>>>> of the slowdown might be.
>>>>>
>>>>> Sound Familiar?  Any guesses?
>>>>>
>>>>>
>>>> group scheduling? get rid of it.
>>>>
>>>>
>>>>
>>>>
>>>>
>>> I have been using 2.6.23 kernel for a while for the same reason.  I'm
>>> going to check my config now.
>>>
>>> Dale
>>>
>>
>> On my laptop it is noticeably sluggish when using SLUB instead of SLAB
>> (despite SLUB being the default, I find it to be worse every time I've
>> tried it so far)
>>
>>
>>
>
>
> Is there a howto for this sort of thing?  From what I read here and
> other places, some laptops are really confusing but there are even
> desktops that have issues with some new features.  How does one get a
> idea of what they should try?  I remember a list ages ago when I first
> installed Gentoo that has a list of CPUs andsome of the options a person
> could put in make.conf.  I think we need one of those, maybe on a wiki
> or something, that lists models and what setting really work.  I think
> laptops would really benefit from this.  I have never had a laptop but
> they seem to be tricky to be nice about it.

I think, other than power-saving stuff, there shouldn't really be any
big difference between desktop and laptop settings...

http://linuxonlaptops.com has lots of info about specific
configurations for various laptops.