When running iotop on Lucid

[Andy Whitcroft]

On Fri, Dec 04, 2009 at 01:10:42PM -0700, Tim Gardner wrote:
> CONFIG_TASK_DELAY_ACCT not enabled in kernel, cannot determine SWAPIN
> and IO %
> 
> Suppose we should enable it?

Sounds fine in principle.  I am a little concerned that it adds a
spinlock on and update of a task specific structure for every IO by the
looks of it.

I'll enable this for the first kernel after alpha-1 and perhaps you can
compare the performance of the two kernels.

-apw