[ros-kernel] Re: atapi with bus master dma

Hartmut Birr hartmut.birr at gmx.de
Sun Feb 29 14:27:01 CET 2004


> > I've started the implementation of bus master dma transfers within
> > atapi. Currently this is  only implemented for disks. The code is
> 
> Finally DMA for IDE !  :-)
> Now we can see if ROS is really too slow compared to NT or if it
> has been only the slow PIO access mode.
> 

Compiling ros on ros with PIO: 3h 10min
Compiling ros on ros with DMA: 3h 5min

Both tests runing with cmd as login shell, with the explorer one hour
longer. If the explorer (or win32k) is to slowly, we should disable the
paged pool checking. 

- Hartmut 
 



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