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Date:      Fri, 11 Apr 2014 16:38:14 +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:  <5347FE56.7040904@selasky.org>
In-Reply-To: <E8E3C4AB-DA87-4E0E-8B3C-5461EBCE4FB1@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> <5347F8A7.1020206@selasky.org> <E8E3C4AB-DA87-4E0E-8B3C-5461EBCE4FB1@gsoft.com.au>

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On 04/11/14 16:29, Daniel O'Connor wrote:
>
> On 11 Apr 2014, at 23:43, Hans Petter Selasky <hps@selasky.org> wrote:
>> Try this patch. I'm pretty sure you can get +256
>> MByte/second using LibUSB too.
>>
>> http://svnweb.freebsd.org/changeset/base/264344
>
> Unfortunately it doesn't seem to have a no impact on performance - I still get 187MB/sec.
>
> --
> Daniel O'Connor software and network engineer
> for Genesis Software - http://www.gsoft.com.au
> "The nice thing about standards is that there
> are so many of them to choose from."
>    -- Andrew Tanenbaum
> GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
>
>
>

Hi,

Can you check using ldd, that it is using the libusb you installed?

Also check using "usbdump" what size the kernel is submitting when you 
are using libusb.

Thank you!

--HPS




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