Excessive I/O causes system to become unresponsive until completed

[ci-macpaw]

Originally reported on Google Code with ID 237

colossus.forbin:

I'm using version 2.3 under Snow Leopard. When decompressing large rar
archives, the entire system becomes unresponsive due to the excessive I/O.
Would it be possible to deprioritize the process? Under OS X, nice'ing a
process also affects the I/O, so I now just run `nice -n 15 unrar ...` from
the terminal to avoid this issue.

[ci-macpaw]

colossus.forbin:

I'm using a MacBook Core2 Duo under Snow Leopard.

[ci-macpaw]

paracelsus:

Maybe. On what kind of system are you having that problem? I haven't noticed much of
that personally.