transfer rate

Hello, I'm using mini2440 and I would like to know the maximum transfer
rate of the pins GPIO input. THANKS FOR YOURS ANSWERS.

700kbyte/s

really, it's very slow for my application......

@Michael: how did you run GPIO at 700K byte/s? i've test with shell script
to blink the led as follow:

     #!/bin/sh                          
     #                                       
     # Blink the onboard LED                 
                                             
     GPIO=$1                                 
                                             
     cleanup() { # Release the GPIO port     
        echo $GPIO > /sys/class/gpio/unexport
        exit                                         
     }                                               
                                                     
     # Open the GPIO port                            
     #                                               
     echo $GPIO > /sys/class/gpio/export             
     echo "out" > /sys/class/gpio/gpio$GPIO/direction     
     trap cleanup SIGINT # call cleanup on Ctrl-C         
                                                          
     # Blink forever                                      
     while [ "1" = "1" ]; do                                               
         
     echo "1" > /sys/class/gpio/gpio$GPIO/value
     echo "0" > /sys/class/gpio/gpio$GPIO/value
     done

     cleanup # call the cleanup routine

When i measured with oscilloscope it said only 650~ Hz,
What am I wrong?