Ubuntu
gvfs package

  1. Bug #197762
  2. Comment #148

Comment 148 for bug 197762

Revision history for this message
Night64 (roberto-berlim) wrote : Re: file transfers on USB disk are very slow

Testing with a Kingston DataTraveler on 2.6.27-14-generic x86_64 Ubuntu 9.04.

copying from /dev/zero

roberto@roberto-desktop:~$ dd if=/dev/zero of=/media/KINGSTON16/test-file bs=512
1038321+0 registros entrando
1038321+0 registros saindo
531620352 byte (532 MB) copiados, 18,2775 s, 29,1 MB/s

A few minutes later

3275058+0 registros entrando
3275058+0 registros saindo
1676829696 byte (1,7 GB) copiados, 265,338 s, 6,3 MB/s

Later, speed consistently droping.

3856803+0 registros entrando
3856803+0 registros saindo
1974683136 byte (2,0 GB) copiados, 402,468 s, 4,9 MB/s

5799921+0 registros entrando
5799921+0 registros saindo
2969559552 byte (3,0 GB) copiados, 1029,97 s, 2,9 MB/s

So far, I had the same results from everybody. But yesterday a friend used his iPod to copy 3.9 GiBi of data from my hard drive... And was blazing fast! I didn't have the time at the moment to do tests with his hardware, but later I noticed that the iPod had two different lines in dmesg:
[81601.496620] usbcore: registered new interface driver usb-storage
[81601.496716] USB Mass Storage support registered.