Re: MAX_USBFS_BUFFER_SIZE

[René Rebe]

Hi,

On Wednesday 01 March 2006 22:54, Greg KH wrote:

> > > Why not just send down 2 urbs with that size then, that would keep the
> > > pipe quite full.
> > 
> > Because that requires even more modifications to libusb and sane (i_usb) ...
> 
> No, do it in your application I mean.

Ok, tweaking libusb to queue N URBs for reads to be split (resulting in 9 URBs
in my usecase) I see a nearly 100% improvement here (2 times faster).

How many URBs may I queue? Nearly infinite (in my case that would be max 64)
or is there some tiny static list somewhere in the affected code-path?

Yours,

-- 
René Rebe - Rubensstr. 64 - 12157 Berlin (Europe / Germany)
            http://www.exactcode.de | http://www.t2-project.org
            +49 (0)30  255 897 45
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