I think you're expecting increase where none is warranted. Copying files
is usually not CPU intensive, it's IO bound. The CPU works a lot faster
than the USB device, or USB bus for that matter. While the CPU may be
showing 100%, that's 100% of the lower scale (not 100% of the higher
scale that it would be moving to).
Show me a case where an action on a lower cpu freq (where the ondemand
doesn't increase the freq) performs significantly worse than the same
action with CPU forced to highest freq, and I'll re-open this bug.
** Changed in: linux-source-2.6.20 (Ubuntu)
Status: Unconfirmed => Rejected
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kernel does not scale cpu on system usage (only on user)
https://launchpad.net/bugs/79232
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