USB 3 devices not reliably connecting at 5Gbps
Daniel O'Connor
doconnor at gsoft.com.au
Fri Apr 11 09:57:52 UTC 2014
On 11 Apr 2014, at 17:58, Hans Petter Selasky <hps at selasky.org> wrote:
> On 04/11/14 09:29, Daniel O'Connor wrote:
>>
>> On 11 Apr 2014, at 16:06, Hans Petter Selasky <hps at selasky.org> wrote:
>> Finally, I ran systat -vmstat 1 while running the test and I see 4000 IRQ/sec on the xhci device, not 8000 as your comment above would suggest.
>
> Looks like a bug there. Can you try this patch:
>
> http://svnweb.freebsd.org/changeset/base/264340
That gives a definite improvement to 187MB/sec, thanks!
--
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
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 195 bytes
Desc: Message signed with OpenPGP using GPGMail
URL: <http://lists.freebsd.org/pipermail/freebsd-usb/attachments/20140411/11a6344b/attachment.sig>
More information about the freebsd-usb
mailing list