new usb2 stack : -current patch with mpsafe tty layer available ?

Peter Jeremy peterjeremy at optushome.com.au
Sun Sep 14 04:38:28 UTC 2008


On 2008-Sep-14 02:50:25 +0200, Olivier SMEDTS <olivier at gid0.org> wrote:
>2008/9/14 Hans Petter Selasky <hselasky at c2i.net>:
>> What does:
>>
>> dd if=/dev/da0 of=/dev/null bs=65535
>>
>> Output for your memory stick?

I thought you needed to do IO in multiples of the blocksize - which
65535 is unlikely to be.

>Not related, I did not notice before, the device seems to read the
>first sectors slower :

This may be related to the magic wear-levelling algorithm in your
stick - the first few sectors are more critical and presumably have
more error detection and correction overheads.

-- 
Peter Jeremy
Please excuse any delays as the result of my ISP's inability to implement
an MTA that is either RFC2821-compliant or matches their claimed behaviour.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 195 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-usb/attachments/20080914/a496e5f3/attachment.pgp


More information about the freebsd-usb mailing list