Re: Sleep problems in kernel 2.6 from mvista.com
On Tue, 2003-12-02 at 23:20, Benjamin Herrenschmidt wrote:
> On Tue, 2003-12-02 at 23:13, Soeren Sonnenburg wrote:
> > On Mon, 2003-12-01 at 23:38, Benjamin Herrenschmidt wrote:
[...]
> What do you mean ? There is no way the new radeonfb would be slower
> than the old one in 2.6. If you run in 8bpp, you won't get any better
> without acceleration and the 2.6 radeonfb isn't accelerated (neither
> the old one nor the new one). 2.4 was. I don't have time to look into
> the accel code for 2.6 for now.
Now that you say that, I find that it might be some scheduling problem
and not the radeonfb:
When I start find /home for the first time it scrolls slowly. When I do
it a second time it is still slow. But when I did it a third time it is
superb fast (only 45sec vs some minutes / approx the same in xterm)...
When I do it now it seems to accelerate... it starts slow but becomes
much faster...
Does that sound like being caused by the anticipated scheduler ?
What I don't understand is why the cpu is at 100% while it was not with
2.4.
> Regarding the fixes, just pick the 2 missing #define's in a tree without
> my changes ;) I'll fix that asap in my tree.
ah, ok.
Soeren.
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