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From: Dan <dan-freebsd-questions@ourbrains.org>
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Subject: Sluggish scheduling during a long disk copy
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Hello. I am copying one 150G disk to a 3ware mirror, and the machine
becomes downright unusable. It takes seconds to switch between 'konsole'
windows and it takes seconds between I type a command (ssh session to
a remote box, which I know is fast and unloaded) and see it executed.

This is 7.1-BETA2. Is this a bug or a generally-accepted performance
behavior? 

Thanks!