[avrdude-dev] Performance of programming via MPSEE

[Ing. Daniel Rozsnyó]

Hi,
  I finally get my onboard programming via FT2232HL to work (on 
previous 5.11 release, there was a random verification failure, todays 
svn is ok).

  But the performance is quite disappointing (112898 B data), comparing 
to my old parallel port approach it goes nearly at half of the speed:


/usr/bin/avrdude -p atmega2560 -c 2232HIO -P usb -U flash:w:devel.hex
write:  26.73s
verify: 24.32s


/usr/bin/avrdude -p atmega2560 -c xil -P /dev/parport0 -U flash:w:devel.hex

write:  17.35s
verify: 29.85s


  Are there any switches to tune the performance of the MPSEE mode? My 
mcu runs at 16M, so clock throttling should not be required.


Note:
  I specially connected the USB cable to a motherboard port (as my USB 
hub somehow slows down all transfers - e.g. to a card reader).


Daniel