[flashrom] [PATCH 2/4] dediprog: Use asynchronous bulk transfers for reading
Stefan Tauner
stefan.tauner at alumni.tuwien.ac.at
Sun Jan 24 20:21:56 CET 2016
On Sat, 30 Mar 2013 20:31:33 +0200
Kyösti Mälkki <kyosti.malkki at gmail.com> wrote:
> From: Nico Huber <nico.huber at 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 at 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.
--
Kind regards/Mit freundlichen Grüßen, Stefan Tauner
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