Re: instruction cache throttling
Joerg Sommer <joerg@alea.gnuu.de> wrote:
> Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
>> On Sat, 2005-05-14 at 21:11 +0000, Joerg Sommer wrote:
>>> Joerg Sommer <joerg@alea.gnuu.de> wrote:
>>> > Here is the hack http://www.minet.uni-jena.de/~joergs/ictc/. I don't know
>>> > if its correct, but it doesn't make the kernel oops.
>>>
>>> I used this module today and I don't see any difference to the life
>>> without. I use 254 because 255 cause very high cpu load.
>>
>> Did you see a significant difference in battery consumption with
>> different ictc values ?
>
> No. I think it doesn't work.
I took the false values. It is not only putting the value into the
register. To enable ictc bit one of the register must be enabled.
Unfortunately I tried powers of two. :-( Now with 15 (divider = 10) it
works and the system behaves like a slower system. Playing a mp3 with
xmms consumes nearly 50 percent of cpu.
But I observed a higher power consumption. I don't know why.
Jörg.
--
Wer in einem gewissen Alter nicht merkt, dass er hauptsächlich von
Idioten umgeben ist, merkt es aus einem gewissen Grunde nicht.
(Curt Goetz)
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