Date: Sun, 14 Sep 2008 12:47:12 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: Peter Jeremy <peterjeremy@optushome.com.au> Cc: freebsd-usb@freebsd.org Subject: Re: new usb2 stack : -current patch with mpsafe tty layer available ? Message-ID: <200809141247.13633.hselasky@c2i.net> In-Reply-To: <20080914043818.GT15376@server.vk2pj.dyndns.org> References: <367b2c980809121246j16fba781s29c0da806f555ebe@mail.gmail.com> <367b2c980809131750gaa617cfp223f8bf9a5016e88@mail.gmail.com> <20080914043818.GT15376@server.vk2pj.dyndns.org>
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On Sunday 14 September 2008, Peter Jeremy wrote: > On 2008-Sep-14 02:50:25 +0200, Olivier SMEDTS <olivier@gid0.org> wrote: > >2008/9/14 Hans Petter Selasky <hselasky@c2i.net>: > >> What does: > >> > >> dd if=/dev/da0 of=/dev/null bs=65535 > >> > >> Output for your memory stick? Hi Peter, > > I thought you needed to do IO in multiples of the blocksize - which > 65535 is unlikely to be. You are right: Should be 65536, but I think the CAM layer will handle that. Blocksize is typically 512 bytes for USB sticks. > > >Not related, I did not notice before, the device seems to read the > >first sectors slower : > --HPS
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