Hey Mark, On Thu, Feb 2, 2012 at 9:07 AM, Mark Phillips wrote: > > > On Thu, Feb 2, 2012 at 9:02 AM, Matt Graham wrote: > >> From: Mark Phillips >> > Gnome reported that the transfer speed was around 400 - 500 KB/sec. >> > I then plugged the same stick into the same port on my laptop, but >> > transferred files (~1.5 GB lots of little files) from Windows 7 >> > running in VMPlayer, and got a transfer speed of 4-5 MB/sec - 10 >> > times faster! Is there some magic in windows that makes USB sticks >> > faster? >> >> If ehci_hcd isn't loaded, then USB2 devices will be limited to USB1 >> speeds. >> If a device is mounted with "-o sync", I/O on that device will be slower >> (but >> it shouldn't have been that slow). If you're using an automounter, that >> automounter may mount removable media with -o sync . Finally, your USB >> device >> may have some sort of flag in unusual_devs.h that says "This device may >> not >> work reliably at high speed; force it to low"--but I think that'd be >> unlikely. >> Check the presence of ehci_hcd first. >> >> OK, # lspci |grep -i ehci > 00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI > Controller #2 (rev 03) > 00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI > Controller #1 (rev 03) > > I assume that means it is ok. How do I check if devices are automounted > with -o sync (debian testing)? > > Mark > > See Mounts (including automounts): # sudo mount See disks # sudo blkid Use the source: # man mount # man blkid -- (602) 791-8002 Android (623) 239-3392 Skype (623) 688-3392 Google Voice ** http://www.it-clowns.com