[Bug 582390] [NEW] File transfers to USB devices constantly SLOWS down on large files > 200MB!

[Zordid]

Public bug reported:

I know that this BUG is killing MANY people for a looooong period of
time. But still, the bug report for 197762 was kind of closed: no more
comments and the advice that this is a hardware-dependent issue!

Well, I disagree! There are many people using Ubuntu that have that
problem - but nobody seems to care!!

The symptom: when copying a file with several hundred MB in size (or
larger) - the copy process starts fast (in my case >30MB/s) - but then,
it dramatically slows down and gets slower and slower and slower!! The
system load rises to levels > 6 (and NOTHING else is happening on the
system at all!!). The copy process will finally come to a (successful)
end - but it takes a long time: 2 GB copied in more than one hour!!

Now: it might be "hardware-dependent" but definitely NOT a hardware
failure! The same system under Windows: no problems at all!

What I got: a Dell Latitude D830 with a Core2 Duo, 4GB of RAM - running the 64bit version of Ubuntu.
This bug has been there for many Ubuntu versions: the first I started with was 8.04 - same issue!!!

WOULD SOMEONE PLEASE TRY TO HELP???
Thanks!!!

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: copy kernel slow usb

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File transfers to USB devices constantly SLOWS down on large files > 200MB!
https://bugs.launchpad.net/bugs/582390
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