[arch-general] cp from USB to interal sata uses up all CPU

[J. C.]

Hi list,
I just noticed this today. I rebooted the system once, since the proper 
installation last week. Now cp from a USB drive to the internal sata drive 
eats up all CPU. The cp command is run as root - currently no alternative 
possible.

The USB drive is mounted during system startup.

A copy operation on the internal disk in question doesn't suffer from overuse 
of CPU resources. Copying from the USB disk to the USB disk isn't perfect, but 
uses only between 20-40% of CPU resources. The CPU frequency governor is set 
to ondemand.

Can anybody suggest a remedy, please?

Best wishes,

Jeanette

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