iB::Topic::LiveCD copying over USB 2.0 speed ?

	Damn Small Linux :: Damn Small Linux Board The DSL Forums

» Welcome Guest
[ Log In :: Register ]

Damn Small Linux Board » Damn Small Linux » User Feedback » LiveCD copying over USB 2.0 speed ?

		Mini-ITX Boards Sale, Fanless BareBones Mini-ITX, Bootable 1G DSL USBs, 533MHz Fanless PC <-- SALE $200 each!
		Get The Official Damn Small Linux Book. DSL Market , Great VPS hosting provided by Tektonic

Pages: (3) </ [1] 2 3 >/

[ Track this topic :: Email this topic :: Print this topic ]

Topic: LiveCD copying over USB 2.0 speed ?

< Next Oldest | Next Newest >

setecio

Group: Members
Posts: 89
Joined: Nov. 2006

Posted: Aug. 10 2008,09:33

I was using DSL 4.4.3 live CD last week to backup the data on a borked winXP machine before trying a repair install of XP.

It took about 1 hour to copy over 3GB of data onto a USB flash drive using Emelfm. Given that the USB flash drive was a fast Corsair 4GB and the USB port was 2.0, is this not very slow? Is there a setting I need to adjust in DSL to get a fast copying speed ? Is there a better package than Emelfm to use ? Or is this slow speed all that I could expect ?

Thanks.

curaga

Group: Members
Posts: 2163
Joined: Feb. 2007

Posted: Aug. 10 2008,10:19

Was it many small files or some big ones?
Usb flash drives are *very* slow with small files, way under 1/10 of their rated write speed.
This is caused by the flash mechanics of big erase blocks.

Your speed was about 0.9mb / s.

Then I recall there was an issue with usb 2.0 by default preventing someone's usb boot, so only 1.1 is loaded by default. You need to "sudo modprobe ehci_hcd" to get usb 2.0 speeds.

--------------
There's no such thing as life. Those mean little jocks invented it ;)
-
Windows is not a virus. A virus does something!

WDef

Group: Members
Posts: 798
Joined: Sep. 2005

Posted: Aug. 10 2008,15:51

usb2.0 is disabled by default?

I can't help but think that's the wrong around to what it ought to be - that it should be enabled by default and disabled with a boot code. Same with dma.

Was there only one person who had problems booting because usb2.0 was enabled?

roberts

Group: Members
Posts: 4983
Joined: Oct. 2003

Posted: Aug. 10 2008,16:10

It is not disabled. My main machine for DSL is usb 2.0 pendrive booted. When I have to use an older machine with only 1.1, I notice the difference.

One can always do an lsmod and system stats and see the module.

Edited by roberts on Aug. 10 2008,16:11