On Sat, 30 Mar 2013 20:31:33 +0200 Kyösti Mälkki kyosti.malkki@gmail.com wrote:
From: Nico Huber nico.huber@secunet.com
This utilizes libusb-1.0's interface for asynchronous transfers. A read is split into 512 byte chunks as required by the dediprog hardware. Up to eight chunks are scheduled for asynchronous transfer which results in a viable speed-up. First tests have shown a three times speed increase.
Signed-off-by: Nico Huber nico.huber@secunet.com
Since we default to dediprog support now I have backported that patch but I don't see any speed up at all. Nico said the speedup was seen when using VirtualBox (Linux on Linux). I have tested with Linux native and Windows XP guest on Linux but don't see any difference. I will repost my version of the patch later tonight.