[CentOS] Write to USB pendrives horribly slow

Ljubomir Ljubojevic office at plnet.rs
Wed Jan 11 23:54:38 UTC 2012

On 01/11/2012 07:33 PM, m.roth at 5-cent.us wrote:
> wwp wrote:
>> On Wed, 11 Jan 2012 16:31:43 +0100 Ljubomir Ljubojevic<office at plnet.rs>
> wrote:
>>> On 01/11/2012 08:45 AM, wwp wrote:
>>>> On Tue, 10 Jan 2012 08:57:14 -0800 (PST) John Doe<jdmls at yahoo.com>
>>> wrote:
>>>>> From: wwp<subscript at free.fr>
>>>>>> I wonder if some mount options aren't wrong with USB pendrives, see:
>>>>>>     /dev/sdd1 on /media/monolith type vfat
>>>>>> (rw,nosuid,nodev,uhelper=udisks,shortname=mixed,dmask=0077,utf8=1,flush)
> my suspicion is about the flush option, which I find atypical here.
> <snip>
>> ehci_hcd does manage my devices (it's not a loadable module, apparently
> compiled in kernel instead), see for instance:
>> kernel: usb 2-2: new high speed USB device using ehci_hcd and address 28
> <snip>
> This may be a dumb question, but have you done an lsusb? I'd be curious -
> I know that on my brand new, as of a few months ago, Dell I have two kinds
> of USB ports, 1.1 and 2.0. We also have some 1.1 webcams... and some 1.0.
> See if your pen drive's in a slower port.

Yes I have seen those too and was VERY surprised.


Ljubomir Ljubojevic
(Love is in the Air)
PL Computers
Serbia, Europe

Google is the Mother, Google is the Father, and traceroute is your
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StarOS, Mikrotik and CentOS/RHEL/Linux consultant

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