好惨的问题。usb磁盘太慢。

eexpress

dmesg 信息： 明明看到了ehci 和 high speed
[4299878.879000] usb 6-5: new high speed USB device using ehci_hcd and address 2[4299879.238000] Initializing USB Mass Storage driver...
[4299879.239000] scsi0 : SCSI emulation for USB Mass Storage devices
[4299879.240000] usb-storage: device found at 2
[4299879.240000] usb-storage: waiting for device to settle before scanning
[4299879.240000] usbcore: registered new driver usb-storage
[4299879.240000] USB Mass Storage support registered.
[4299884.242000]   Vendor: FUJITSU   Model: MHT2040AT         Rev: 0022
[4299884.242000]   Type:   Direct-Access                      ANSI SCSI revision: 00
[4299884.249000] usb-storage: device scan complete
[4299884.496000] Driver 'sd' needs updating - please use bus_type methods
[4299884.500000] SCSI device sda: 78140161 512-byte hdwr sectors (40008 MB)
[4299884.500000] sda: assuming drive cache: write through
[4299884.505000] SCSI device sda: 78140161 512-byte hdwr sectors (40008 MB)
[4299884.505000] sda: assuming drive cache: write through
[4299884.505000]  sda: sda1 sda2
[4299884.854000] sd 0:0:0:0: Attached scsi disk sda
[4299884.873000] sd 0:0:0:0: Attached scsi generic sg0 type 0
[4299884.998000] sda: Current: sense key: No Sense
[4299884.998000]     Additional sense: No additional sense information
[4299999.653000] EXT3-fs warning: mounting fs with errors, running e2fsck is recommended
[4299999.653000] kjournald starting.  Commit interval 5 seconds
[4299999.654000] EXT3 FS on sda1, internal journal
[4299999.654000] EXT3-fs: mounted filesystem with ordered data mode.

mtab 信息： rox-filer 的自动挂载，fstab设置。
/dev/sda2 /media/USB-FAT vfat rw,noexec,nosuid,nodev,sync,utf8,umask=0,user=exp 0 0
/dev/sda1 /media/USB-EXT3 ext3 rw,noexec,nosuid,nodev,sync,user=exp 0 0


~/媒体/movie$ date;mv Sapphic\ Erotica.mpg /media/USB-EXT3/;date
2006年 07月 17日 星期一 08:47:27 CST
2006年 07月 17日 星期一 08:52:03 CST
~/媒体/movie$ ll /media/USB-EXT3/Sapphic\ Erotica.mpg
-rw-r----- 1 exp exp 179246645 2006-05-16 16:57 /media/USB-EXT3/Sapphic Erotica.mpg

$ lsmod|grep usb
usb_storage            79488  0
scsi_mod              145960  5 sg,sd_mod,usb_storage,sr_mod,sbp2
usbcore               137700  4 usb_storage,ehci_hcd,ohci_hcd

计算结果：
678964.564393939B/s
663k/s

13.353710938M/s 但是windows粗略测试结果这样。