Date: Fri, 11 Apr 2014 16:13:59 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Daniel O'Connor <doconnor@gsoft.com.au> Cc: freebsd-usb@freebsd.org Subject: Re: USB 3 devices not reliably connecting at 5Gbps Message-ID: <5347F8A7.1020206@selasky.org> In-Reply-To: <ACC54FEC-2265-4861-9B2F-EEE6EDFC7857@gsoft.com.au> References: <A9616810-7BD9-49FC-BFA7-44206E4CCAC1@gsoft.com.au> <53478D5B.3090205@selasky.org> <ACC91511-A630-4262-AFE4-441AA154E405@gsoft.com.au> <5347BF39.2000704@selasky.org> <ACC54FEC-2265-4861-9B2F-EEE6EDFC7857@gsoft.com.au>
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On 04/11/14 12:19, Daniel O'Connor wrote: > > On 11 Apr 2014, at 19:38, Hans Petter Selasky <hps@selasky.org> wrote: >> On 04/11/14 09:29, Daniel O'Connor wrote: >>> usb_xf[i].xf = libusb_alloc_transfer(0); >>> usb_xf[i].idx = i; >>> usb_xf[i].done = 0; >>> usb_xf[i].submitted = 0; >> >> I think you can get more speed in libusb: > >> bufsize = 16384; >> >> ^^^ add a clause for super-speed to use 32K/64K here: > > I think that only applies to libusb 0.1 - I am using the 1.0 API. > Hi, Try this patch. I'm pretty sure you can get +256 MByte/second using LibUSB too. http://svnweb.freebsd.org/changeset/base/264344 --HPS
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