[minor] Apple Pmac G5 - ATA performance problem

[Frederic Leroy]

Hello,

I put a harddrive and 'superdrive' on ATA bus on a PowerMac G5.
It's works very fine but I notice the harddrive is going half speed.
The harddrive and the optical drive are both in UltraDMA2.
The Ata driver don't accept UltraDMA mode above 2.

Here is results of Bonnie with a 2G test file on Linux and MacOSX : 
              -------Sequential Output-------- ---Sequential Input-- --Random--
              -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine    MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU  /sec %CPU
G5-linux 2000 23867 99.3 42912  9.3 13562  3.4 16871 67.3 23292  3.7 316.6  0.7
G5-macos    0 31504 99.1 54656 18.0 22615 13.7 34970 98.6 54632 23.9 224.4  3.3

-- 
Frederic Leroy
Lost in Germany