Are you sure you have it plugged into a USB2 port? You need the ehci driver to drive it at _high_ speed. Full speed is only ~900kB/s (which means about 12 minutes for a 700MB file), High Speed can do as much as 40MB/s (you're probably limited by the hard disk at that point). If you are sure it is plugged into a USB2 port you should send the kernel logs when you plug the device in and as you load the ehci driver as below it looks like it is being driven by the companion driver (low or full speed).
On Tue, 21 Dec 2004, Thiago Guzella wrote: > Hello folks, > > I have a vipower external hdd case > (www.vipower.com/product/SmartFamily/External_Enclosure/3_5/vp_9258v/vp_9258v.htm) > with a maxtor 80gb hd, connected to an athlon64 3500+ on an asus a8v > deluxe, running fedora 2 x86_64, with the 2.6.5 kernel, using usb > 2.0... > > The device is successfully detected by the system at bootup: > > SNIP > ----- > > ehci_hcd 0000:00:10.4: remove, state 1 > usb usb1: USB disconnect, address 1 > usb 1-6: USB disconnect, address 2 > ehci_hcd 0000:00:10.4: USB bus 1 deregistered > usb 4-2: new full speed USB device using address 2 > scsi3 : SCSI emulation for USB Mass Storage devices > Vendor: Maxtor 6 Model: Y080L0 Rev: 0 0 > Type: Direct-Access ANSI SCSI revision: 02 > SCSI device sdb: 160086528 512-byte hdwr sectors (81964 MB) > sdb: assuming drive cache: write through > sdb: sdb1 > > USB Universal Host Controller Interface driver v2.2 > > ... > > usb 3-2: new full speed USB device using address 2 > scsi4 : SCSI emulation for USB Mass Storage devices > Vendor: Maxtor 6 Model: Y080L0 Rev: 0 0 > Type: Direct-Access ANSI SCSI revision: 02 > SCSI device sdb: 160086528 512-byte hdwr sectors (81964 MB) > sdb: assuming drive cache: write through > sdb: sdb1 > Attached scsi disk sdb at scsi4, channel 0, id 0, lun 0 > USB Mass Storage device found at 2 > > ----- > > I can mount and access it perfectly, but the problem is that any > activity (copying a file, removing a directory) on the drive will be > REALLY slow... > > When copying a file, I can notice that in the beginning of the > transfer the device works quite fast, but after some time (around 10 > secs), the speed is greatly reduced (I am taking this conclusion based > on the read/write activity on the device reported by gkrellm)... To > illustrate this speed drop, copying a 700Mb file from my main hard > drive (sata 120 Gb hd) takes around 13 minutes, whereas a 25 Mb file > takes only .65 secs... > > The active modules are: > > SNIP: > ----- > > Module Size Used by > uhci_hcd 31280 0 > vfat 13696 0 > fat 43328 1 vfat > snd_pcm_oss 55844 0 > snd_mixer_oss 19200 3 snd_pcm_oss > snd_via82xx 25184 6 > snd_pcm 95244 3 snd_pcm_oss,snd_via82xx > snd_timer 22792 1 snd_pcm > snd_ac97_codec 68228 1 snd_via82xx > snd_page_alloc 10760 2 snd_via82xx,snd_pcm > gameport 4224 1 snd_via82xx > snd_mpu401_uart 7040 1 snd_via82xx > snd_rawmidi 21920 1 snd_mpu401_uart > snd_seq_device 7692 1 snd_rawmidi > snd 50024 16 > snd_pcm_oss,snd_mixer_oss,snd_via82xx,snd_pcm,snd_timer,snd_ac97_codec,snd_mpu401_uart,snd_rawmidi,snd_seq_device > soundcore 8480 3 snd > parport_pc 25536 1 > lp 11512 0 > parport 40460 2 parport_pc,lp > autofs4 15360 0 > w83627hf 31620 0 > eeprom 7176 0 > lm75 7684 0 > i2c_sensor 2688 3 w83627hf,eeprom,lm75 > i2c_isa 2432 0 > i2c_viapro 6796 0 > i2c_core 21508 6 > w83627hf,eeprom,lm75,i2c_sensor,i2c_isa,i2c_viapro > ppp_synctty 8576 0 > ppp_async 10752 1 > ppp_generic 27680 6 ppp_synctty,ppp_async > slhc 6784 1 ppp_generic > ipt_REJECT 5888 1 > ipt_state 2048 4 > ip_conntrack 33692 1 ipt_state > iptable_filter 2688 1 > ip_tables 16640 3 ipt_REJECT,ipt_state,iptable_filter > sk98lin 161068 1 [unsafe] > floppy 61808 0 > sg 37560 0 > dm_mod 43040 0 > usb_storage 75104 1 > button 6056 0 > battery 8976 0 > asus_acpi 11936 0 > ac 4496 0 > radeon 116448 0 > ipv6 249728 6 > ext3 131472 2 > jbd 54448 1 ext3 > sata_promise 14084 2 > sata_via 5764 0 > libata 39552 2 sata_promise,sata_via,[permanent] > sd_mod 19456 5 > scsi_mod 121248 5 sg,usb_storage,sata_promise,libata,sd_mod > > ----- > > I have checked the bios to make sure usb 2.0 is working at fullspeed (480Mbps) > > I bought this case from a friend.. One clue he gave to me was to > remove the ehci_hcd module before running the device, but this lead to > no performance gains... > > The weird thing is that the same device, mounted on my other machine > (an athlon xp 2000+, on an asus a7v8x mobo, also running fedora 2 > i686, kernel 2.6.8) is quite fast... > > > -- /------------------------------------+-------------------------\ |Stephen J. Gowdy | SLAC, MailStop 34, | |http://www.slac.stanford.edu/~gowdy/ | 2575 Sand Hill Road, | |http://calendar.yahoo.com/gowdy | Menlo Park CA 94025, USA | |EMail: [EMAIL PROTECTED] | Tel: +1 650 926 3144 | \------------------------------------+-------------------------/ ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
