Re: Problem with an external usb HD - slow usb

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, 2010-03-08 at 15:53 -0300, Luigi Castro Cardeles wrote:
> 2010/3/8 Patrick O'Callaghan <pocallaghan@xxxxxxxxx>
> > [Please don't top-post on this list]
> >
> > First of all, is this device a real hard disk, i.e. a mechanically
> > rotating magnetic surface, or is it some kind of Flash drive?
> 
> Hi,
> sorry for top post and sorry about the poor english.
> It is not a flash drive, is an real HD.
> 
> I search a lot on www about this issue and the only clue i find is
> about sync/async option when mount the device and verify if it is
> connected to usb 2.0 hub.
> The strange thing is if i use windows to copy this diretory (drag on
> drop), the full operation last more or less two six (copy directory
> and umount - "eject" - the device),
> The same operation under fedora last a lot longer. (last day, i let
> the copy last for a full day and it is not finished - i pause in the
> middle).

It would be interesting to see what happens with a different filesystem,
e.g. ext3 or ext4, that doesn't use fuse. If that's not practical
because the disk contains real data, perhaps you could create a small
partition with one of the kernel-supported filesystems and measure that.

If that shows a big difference, check if fuse has enough working memory,
or if there's any way to instrument it (I know very little about fuse so
I can't help there). Or even try it with a vm-based Windows installation
(I know it sounds wierd, but it could be interesting to try).

poc

-- 
users mailing list
users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe or change subscription options:
https://admin.fedoraproject.org/mailman/listinfo/users
Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines

[Index of Archives]     [Current Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Yosemite News]     [Yosemite Photos]     [KDE Users]     [Fedora Tools]     [Fedora Docs]

  Powered by Linux