Date: Fri, 04 May 2007 11:06:28 -0700 From: "Kevin Oberman" <oberman@es.net> To: usb@freebsd.org Subject: New USB drivers Message-ID: <20070504180628.B14D845042@ptavv.es.net>
next in thread | raw e-mail | index | archive | help
--==_Exmh_1178301988_49832P Content-Type: text/plain; charset=us-ascii Content-Disposition: inline I have now been running the Hans Petter's USB drivers for about a week and they have been working pretty well. That said, I have seen two things that concern me. 1. Today I connected a USB disk to the system. It ran fine, but then I dismounted it (using nautilus and hald), the window informing me that the device could be safely removed popped up and I unplugged the drive. At that point, my system live-locked. I did see some updates to windows, but I could not change focus to a different window nor could I move to a different desktop. I tried CTRL-ALT-BS to kill X, but it would not work. I tried CTRL-ALT-DEL to reboot the system. No joy. The system was at least partly alive as the disk activity LED would flash now and then. I eventually had to power-cycle it. :-( As a result I have pretty much no information to help track this one down. 2. I use dd to mirror my system disk on a weekly basis. I track the performance of dd during this operation and, with no other changes than the USB stack being added to the kernel, the average transfer rate dropped from 17.43 MB to 17.15 MB. Not huge, but quite noticeable when copying an 80 GB drive. I run this in single-user mode with no partitions mounted (except root mounted read-only), so USB previously had not even been loaded, so the old drivers may have had even a greater impact. And the difference may not be the USB stack, but nothing else was changed. It will take more time to tell if there is a real problem here, but I wanted to provide a little (very little, I admit) information on my experience. Thanks, Hans, for all of your work on this. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 --==_Exmh_1178301988_49832P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) Comment: Exmh version 2.5 06/03/2002 iD8DBQFGO3Ykkn3rs5h7N1ERAudYAJ4ycSrdkOHGO4Bf8NnTZSPHucoFbACgn3N2 DHzcmiRqvuzhJFZWPHSb9Tc= =Q+iA -----END PGP SIGNATURE----- --==_Exmh_1178301988_49832P--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20070504180628.B14D845042>