USB Device working faster on Windows then on Linux

Reegz · 04-26-2006, 10:43 AM

Hi,

I have the situation where Windows is able to write to a USB 2 flash disk much quicker than Linux (Mandrake 2.6.3 kernel). I find this odd!!

The device is being mounted automatically in KDE.

Any ideas why this is??

guedellas · 04-26-2006, 11:22 AM

maybe you are using usb-uhci module (for support of usb 1.1) instead of usb-ehci (which supports usb 2.0).

To check it, type the following and check the output:

Code:

lsmod

If usb-ehci is not present in the output, you can insert it with:

Code:

sudo modprobe usb-ehci

That's the first though that cross my mind. Hope it helps

marozsas · 04-26-2006, 12:50 PM

maybe your device is mounted with the sync option.
This is the default in SuSE 9.3 and 10.0.
In this way, you can unplug the device without umount it.

Fedora Core 5 (and WinXp) mount the device without the sync option. You must umount (eject) it to avoid data corruption.

Use the mount command to check the way Mandrake does this, and inspect the options field.

Reegz · 04-26-2006, 04:04 PM

Quote:

Originally Posted by guedellas

maybe you are using usb-uhci module (for support of usb 1.1) instead of usb-ehci (which supports usb 2.0).

To check it, type the following and check the output:

Code:

lsmod

If usb-ehci is not present in the output, you can insert it with:

Code:

sudo modprobe usb-ehci

That's the first though that cross my mind. Hope it helps

Thanks, will try it when i get back to the office.

Reegz · 04-26-2006, 04:04 PM

Quote:

Originally Posted by marozsas

maybe your device is mounted with the sync option.
This is the default in SuSE 9.3 and 10.0.
In this way, you can unplug the device without umount it.

Fedora Core 5 (and WinXp) mount the device without the sync option. You must umount (eject) it to avoid data corruption.

Use the mount command to check the way Mandrake does this, and inspect the options field.

Will check on those options as well