[ltp] T42: USB2 port way too slow

Eric Van Buggenhaut linux-thinkpad@linux-thinkpad.org
Sat, 17 Jun 2006 14:52:56 +0200


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 ????

-- 
Eric VAN BUGGENHAUT
Eric.VanBuggenhaut@AdValvas.be