Re: [PATCH] vmstat: on demand updates from differentials V7

From: Christoph Lameter
Date: Tue Jun 03 2014 - 12:28:28 EST

On Tue, 3 Jun 2014, Frederic Weisbecker wrote:

> So after the cpumask_var_t conversion I have no other concern except
> perhaps that the scan may bring some overhead on workloads that don't
> care about isolation. You might want to make it optional. But I let you
> check that.

Testing so far indicates that typical loads have spurts of kernel usage
which need vmstat but otherwise there are large segments of processing
that do not need the vmstat worker. It seems that this change is generally
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