rsync causing high loads on 2.6.36-rc4

[Thomas Fjellstrom]

This isn't something I remember happening with older kernels, but I just 
started an rsync from an nfs share over GbE, to a external SATA drive over usb 
2, and I'm seeing both of my laptop's cores hitting 80-100% cpu use, two rsync 
processes are using 20-40% each, some kworker's are using tiny bits (2-10%), 
and kswapd0 is hovering around 5%. Quite a lot of the time seems to be io-
wait. load average is almost at 6.

This is a dual core T9400 core2duo laptop, with 4GB ram, running full amd64 
(64bit 2.6.36-rc4 kernel and userspace).

Its impacting desktop interactivity quite a lot.

-- 
Thomas Fjellstrom
thomas@xxxxxxxxxxxxx
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