Date: Sun, 14 Sep 2008 14:38:18 +1000 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Olivier SMEDTS <olivier@gid0.org> Cc: freebsd-usb@freebsd.org Subject: Re: new usb2 stack : -current patch with mpsafe tty layer available ? Message-ID: <20080914043818.GT15376@server.vk2pj.dyndns.org> In-Reply-To: <367b2c980809131750gaa617cfp223f8bf9a5016e88@mail.gmail.com> References: <367b2c980809121246j16fba781s29c0da806f555ebe@mail.gmail.com> <200809132245.14748.hselasky@c2i.net> <367b2c980809131646n2b5bd8e9gc44a22147dacbd5@mail.gmail.com> <200809140222.30008.hselasky@c2i.net> <367b2c980809131750gaa617cfp223f8bf9a5016e88@mail.gmail.com>
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[-- Attachment #1 --] 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? 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. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEARECAAYFAkjMlToACgkQ/opHv/APuIcFBwCeJGJSuJyNeTdRWcTevD5ePSaZ u/4AoKZJiAq0yGdg0slrhd+GYrAh+vOO =/g1O -----END PGP SIGNATURE-----help
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