Re: [PATCH 0/4] Finer granularity and task/cgroup irq timeaccounting

From: Peter Zijlstra
Date: Tue Aug 24 2010 - 09:08:34 EST


On Tue, 2010-08-24 at 18:17 +0530, Balbir Singh wrote:
>
> "There are usecases where reporting this time against task
> or task groups or cgroups will be useful for user/administrator
> in terms of resource planning and utilization charging"

Or confusing, what happens if you attribute the IRQ overhead of a
ping-flood to your tasks?

By not providing these numbers per task/group people will have to
actually think about what it is that is causing these high irq loads and
have a chance of actually doing better than random attribution.

So no, providing random numbers on the slight chance that they might
possibly make sense for your workload doesn't seem like a sound reason
to provide them.


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