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[Bug 669140] Re: Install to usb stick has slow read/write performace

 

nlowen, this bug was reported a while ago and there hasn't been any
activity in it recently. We were wondering if this is still an issue? If
so, could you please test for this with the latest development release
of Ubuntu? ISO images are available from http://cdimage.ubuntu.com
/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.11

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** This bug is no longer a duplicate of bug 500069
   USB file transfer causes system freezes; ops take hours instead of minutes

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/669140

Title:
  Install to usb stick has slow read/write performace

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  A full install of ubuntu 10.10 to a usb stick as if it were a hard
  drive results in terrible drive performance. The benchmark tool in the
  disk utility will not benchmark the drive because it is too slow. A
  copying data gives 2mb/s read and write performance, but the copy
  takes longer than it should at that speed because the copy often
  stalls. When I had installed on a hard drive and copied data to and
  from this usb stick, I could get up to 15mb/s. I don't know what
  package to report as having the problem. Please let me know and I will
  attach the apport information.

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