Comment 231 for bug 197762

søn, 20 12 2009 kl. 20:34 +0000, skrev Przemysław Kulczycki:
> So it seems that some subsystem invoked by Gnome (hal? udev? gvfs?)
> is responsible for the slowdown.
> Please tell me if this is relevant to this bug or should I file a new one?

Everyone should open new reports, you should too.

Your problem seems related to mount options, try to find the specific
option that makes the difference in performance such that you can mount
your disk manually from cli and consistently reproduce good and bad
numbers depending on which options you mount your disk with.

I've updated https://help.ubuntu.com/community/DiskPerformance to
include the part "Mounting disk manually gives better performance than
auto-mounting and semi-automounting" to address your problem. Please see
that for more details.

To Botond, follow the instructions by Theodore Ts'o and
https://help.ubuntu.com/community/DiskPerformance for using dd.

slumbergod and everyone else, see
https://help.ubuntu.com/community/DiskPerformance. After careful study
and if there is still a problem, open a new bug and include a reference
to it in this bug.