[EMAIL PROTECTED] (Christoph Egger) writes:
> On 30 Oct 1999, Marcus Sundberg wrote:
> >
> > Note however that the direct acceleration you get using matroxfb
> > is 4-6 times faster that the ioctl() based acceleration of the Matrox
> > KGIcon driver. On a related note - direct acceleration using KGIcon
> > is also about 50% slower than direct acceleration using matroxfb,
> > so something must be broken with our mmap() handler.
> >
>
> Could it be, that there is a additional Software-Layer in kgicon?
What "software-layer" are you referring to? The ioctl() slowness is
because of the context-switches required when you make a sys-call.
//Marcus
--
-------------------------------+------------------------------------
Marcus Sundberg | http://www.stacken.kth.se/~mackan
Royal Institute of Technology | Phone: +46 707 295404
Stockholm, Sweden | E-Mail: [EMAIL PROTECTED]
