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December 2011

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Subject:
Re: Is your USB really slow?
From:
Florian Philipp <[log in to unmask]>
Reply To:
Florian Philipp <[log in to unmask]>
Date:
Tue, 6 Dec 2011 20:41:09 +0100
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Am 06.12.2011 19:15, schrieb Todd And Margo Chester:
>> Hi All,
>>
>> SL 6.1 x64
>>
>> I have noticed that writes to my USB Flash Drives
>> are a good 20 times slower than on my other CentOS
>> 5.7 x32 machine.  What use to take five minutes,
>> now takes over two hours.  :-(
>>
>> Anyone else notice this?  And, did you come up with a
>> work around?
>>
>> Many thanks,
>> -T
> 
> Extra info.  If I boot off a Fedora Core 16 Xfce Live CD, I
> can copy my files to flash drive at full speed.  It is a pain
> in the neck, but it works.
> 
> -T

Factor 20 could mean USB-1.1 instead of 2.0. Factor 40 would be a better
fit but your flash drive probably maxes out before that is reached.
Please post the output of `lsusb -v`, `lspci` and `lsmod`.

Regards,
Florian Philipp

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