Comment 11 for bug 1032342

On Fri, 3 Aug 2012, mat brown wrote:

> The following is formatted in line with the info here:
> https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Kernel.org_Format
> and sent as advised at the end of this bug report here:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1032342
>
> Thanks in advance for your time, I very much hope I've minimised any
> wastage of that precious resource.

> Summary:
>
> 090c:1000 file transfer to/from USB 2.0 flash drive, via 3.0 port at
> best 50-60 Mb/s

> The reason I'm reporting it here rather than at kernel.org is that I
> don't think it's a kernel bug, I think it's to do with Debian/Ubuntu's
> kernel patches. Because it doesn't happen in the live version of
> Fedora 17 I tried, but it does happen with Debian Wheezy. Windows 7 is
> also fast.

What mount options are used for the flash drive? In particular, does
Ubuntu use the "sync" option?

Also, do any error messages show up in the system log during the slow
data transfers?

Alan Stern