[ltp] T42: USB2 port way too slow

[Pintér Balázs]

Eric Van Buggenhaut wrote:
> Hi,
>
> My T42 ships with 2 hi-speed USB ports. They're managed boy ehci-hcd 
> kernel modules, the only ones loaded into memory.
>
> Anyway, I get super slow data transfer rates and I can't understand 
> why:
>
> It takes 14 min (!!) to transfer 57MB to a USB pendrive (which is also 
> hi-speed USB):
>
> $ du -h LosSecretos-UnayMilVeces
> 57M     LosSecretos-UnayMilVeces
>
>
> $ time cp -r LosSecretos-UnayMilVeces/ /mnt/iaudio/music/
>
> real    14m12.669s
> user    0m0.000s
> sys     0m0.812s
>
> What transfer speeds do you get ? What is the reason it goes sooooo 
> slow ????
>
>   
Look at dmesg, maybe you are using the low performance usb block device 
driver instead of usb-strorage.  (Kernel config -> Device drivers -> 
Blocks devices -> Low performance USB Block driver)

Balazs Pinter