k4P6ir3k9zAQcufXDKQvkKiwCYpmQiwQC7Q5UBLyZFwkWnRFxtScNqyR4hnLsNHl   
   WpxU0dMnHzXOF6BiA+htVFvUIHFt8A0kqsuTKRTFNn9jrRXpfSSnCm/3PHHbbPg+XhE=   
   From: "Allan"    
      
   On Thu, 9 Dec 2010 23:03:57 UTC, Lars Erdmann  wrote:    
      
   > I have again updated the USB host controller drivers USBUHCD.S   
   S,USBOHCD.SYS,USBEHCD.SYS.   
      
   Tried these too. They are also slow, compared to patched IBM driver.   
      
   > However, it is a long time ago, that a patch was made available   
   > to the USBEHCD IBM driver, that made it almost twice as fast here.   
   >   
   > Why didn't you pick that up ?   
   >   
   1.) Because I don't know the source location   
      
   Took me 2 minutes to find the same pattern as the original patch changed.   
   For this version of yours, I used this patchfile:   
      
   FILE USBEHCD2a.SYS   
   VER 4F34 FF76F2   
   CHA 4F34 6A0190   
      
   I assume you can find this place in your own sources.   
      
      
   2.) Because it increases IRQ load   
      
   Of course it increeses IRQ load, when it is faster - did you expect anything   
   else ?   
   Here, transfering a file, IRQ load with your driver is 0.5%   
   with the patch, it is 0.8%  Hardly anything anyone would notice.   
   Read speed goes from 6.5 -> 10.5MB/s   
   Write speed goes from 5,4 -> 8,1MB/s   with this patch   
      
   Maybe you can add a cmd line parameter, to set this.   
      
   --    
     Allan.   
      
   It is better to close your mouth, and look like a fool,   
   than to open it, and remove all doubt.   
      
   --- Internet Rex 2.31   
    * Origin: Datemas.de http://www.news.datemas.de (1:261/20.999)