Date: Sun, 14 Sep 2008 02:50:25 +0200 From: "Olivier SMEDTS" <olivier@gid0.org> To: "Hans Petter Selasky" <hselasky@c2i.net> Cc: freebsd-usb@freebsd.org Subject: Re: new usb2 stack : -current patch with mpsafe tty layer available ? Message-ID: <367b2c980809131750gaa617cfp223f8bf9a5016e88@mail.gmail.com> In-Reply-To: <200809140222.30008.hselasky@c2i.net> References: <367b2c980809121246j16fba781s29c0da806f555ebe@mail.gmail.com> <200809132245.14748.hselasky@c2i.net> <367b2c980809131646n2b5bd8e9gc44a22147dacbd5@mail.gmail.com> <200809140222.30008.hselasky@c2i.net>
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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? Not related, I did not notice before, the device seems to read the first sectors slower : [2:45] root@q 206 /work/i4b/trunk# dd if=/dev/da0 of=/dev/null bs=65536 count=100 skip=10000 100+0 records in 100+0 records out 6553600 bytes transferred in 0.688921 secs (9512847 bytes/sec) [2:46] root@q 207 /work/i4b/trunk# dd if=/dev/da0 of=/dev/null bs=65536 count=100 skip=1000 100+0 records in 100+0 records out 6553600 bytes transferred in 0.688662 secs (9516427 bytes/sec) [2:46] root@q 208 /work/i4b/trunk# dd if=/dev/da0 of=/dev/null bs=65536 count=100 skip=100 100+0 records in 100+0 records out 6553600 bytes transferred in 0.687537 secs (9531997 bytes/sec) [2:46] root@q 209 /work/i4b/trunk# dd if=/dev/da0 of=/dev/null bs=65536 count=100 skip=10 100+0 records in 100+0 records out 6553600 bytes transferred in 0.722788 secs (9067111 bytes/sec) [2:46] root@q 210 /work/i4b/trunk# dd if=/dev/da0 of=/dev/null bs=65536 count=100 skip=1 100+0 records in 100+0 records out 6553600 bytes transferred in 0.753043 secs (8702821 bytes/sec) [2:46] root@q 211 /work/i4b/trunk# dd if=/dev/da0 of=/dev/null bs=65536 count=100 100+0 records in 100+0 records out 6553600 bytes transferred in 0.757550 secs (8651046 bytes/sec) -- Olivier Smedts _ ASCII ribbon campaign ( ) e-mail: olivier@gid0.org - against HTML email & vCards X www: http://www.gid0.org - against proprietary attachments / \ "Il y a seulement 10 sortes de gens dans le monde : ceux qui comprennent le binaire, et ceux qui ne le comprennent pas."
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