[ltp] T42: USB2 port way too slow
Nick Lidakis
linux-thinkpad@linux-thinkpad.org
Sat, 17 Jun 2006 10:48:59 -0400
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On 6/17/06, Eric Van Buggenhaut <eric@sindominio.net> 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 ????
>
> --
> Eric VAN BUGGENHAUT
> Eric.VanBuggenhaut@AdValvas.be
> --
> The linux-thinkpad mailing list home page is at:
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
>
I had the same problem (and everything was configured properly in the kernel
in regards to USB), it seems that there is a bug (with 2.6 kernels) when
using the sync option in fstab and USB and fire wire devices. Remove these
entries if you have them and try again.
Now my iPod and SanDisk flash key fly. I just have to use the sync command
from console before I remove the the key. Hope that helps.
Nick
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<br><br><div><span class="gmail_quote">On 6/17/06, <b class="gmail_sendername">Eric Van Buggenhaut</b> <<a href="mailto:eric@sindominio.net">eric@sindominio.net</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi,<br><br>My T42 ships with 2 hi-speed USB ports. They're managed boy ehci-hcd<br>kernel modules, the only ones loaded into memory.<br><br>Anyway, I get super slow data transfer rates and I can't understand<br>why:<br><br>
It takes 14 min (!!) to transfer 57MB to a USB pendrive (which is also<br>hi-speed USB):<br><br>$ du -h LosSecretos-UnayMilVeces<br>57M LosSecretos-UnayMilVeces<br><br><br>$ time cp -r LosSecretos-UnayMilVeces/ /mnt/iaudio/music/
<br><br>real 14m12.669s<br>user 0m0.000s<br>sys 0m0.812s<br><br>What transfer speeds do you get ? What is the reason it goes sooooo<br>slow ????<br><br>--<br>Eric VAN BUGGENHAUT<br><a href="mailto:Eric.VanBuggenhaut@AdValvas.be">
Eric.VanBuggenhaut@AdValvas.be</a><br>--<br>The linux-thinkpad mailing list home page is at:<br><a href="http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad">http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
</a><br></blockquote></div><br><br>I had the same problem (and everything was configured properly in the kernel in regards to USB), it seems that there is a bug (with 2.6 kernels) when using the sync option in fstab and USB and fire wire devices. Remove these entries if you have them and try again.
<br><br>Now my iPod and SanDisk flash key fly. I just have to use the sync command from console before I remove the the key. Hope that helps.<br><br>Nick<br>
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