-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 06/25/2012 04:28 AM, Todd And Margo Chester wrote:
> On 06/24/2012 06:56 AM, Nico Kadel-Garcia wrote:
>> On Sun, Jun 24, 2012 at 1:03 AM, Todd And Margo Chester 
>> <[log in to unmask]> wrote:
>>> Hi All,
>>> 
>>> SL 6.2 64 bit
>>> 
>>> Has anyone noticed that their USB 2.0 ports are really, really
>>> slow?
>>> 
>>> If I need to copy anything substantial to my USB 2 sticks, I
>>> boot into Fedora Live 17 Xfce 64 bit CD. Then it goes about 20
>>> times faster than under SL 6.2.
>>> 
>>> Anyone have a work around?
>>> 
>>> Many thanks, -T
>> 
>> It might help if you mentioned what USB hardware, exactly, you
>> are using, and what you're doing on it. Flash drives? External
>> Storage? Do you re-arrange your attached devices when you boot to
>> Fedora 7?
>> 
> 
> The stick usually is a Kanguru Flash Blue II (20 MB/s write, 24
> MB/s read).  But sometimes it is a Verbatim (same speed as the 
> Flash Blue).
> 
I've experienced this on older Fedora releases as well as openSUSE;
it's only been recently fixed in upstream kernels (since 3.3) and the
fix probably hasn't been backported to the RHEL kernels yet (it's
probably not a priority for enterprise Linux use cases)

http://kernelnewbies.org/Linux_3.3#head-f78554ef663de0fc4d2a82a79bb1fa76e20843dc

"Compaction combined with Transparent Huge Pages can cause significant
stalls with USB sticks or browser"

Best regards,

- -- 
Michel Alexandre Salim
Fedora Project Contributor: http://fedoraproject.org/

Email:  [log in to unmask]  | GPG key ID: A36A937A
Jabber: [log in to unmask]       | IRC: [log in to unmask]

()  ascii ribbon campaign - against html e-mail
/\  www.asciiribbon.org   - against proprietary attachments

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iQEcBAEBAgAGBQJP6DrUAAoJEEr1VKujapN69S8IAITaNjdmHTnaE2LXcK/9RWmB
q7RmDJVPmU0oRUog6Q1ENum+ug/HlBSFg2EIC3Rm7HB3oI88Ib2uGTgQYOMOIe+q
3ZOOl60vDjZAkHcI0FrESYhcq+WQerxlvzKyPpfBBy4mmHWSdxpOsjV7nUfXgK60
Trp4GsMqgGu+hCLGUhl+SCbZK3K/zqNpqL83zcQn0bjTF1aHWdpaweMteOM0FgtQ
0+51u5DwHy1GEkFmfAdn5y31Ym3bxc5nvXMKhblDDg6QDWwVN+acu3KINRE/ZPhY
FaaQWt6PZIuvokTikCJDE0AYYQ/5PNbxeaM4fJJPdVAyBbGOBxHyj1RjYUdogHA=
=FXfs
-----END PGP SIGNATURE-----