Re: [PATCH] sched: fix updating sd->balance_interval inidle_balance()

From: Peter Zijlstra
Date: Thu May 20 2010 - 03:17:19 EST

On Wed, 2010-05-19 at 16:45 -0700, Nikhil Rao wrote:
> sd->balance_interval is updated incorrectly when SD_BALANCE_NEWIDLE is not set
> in sd->flags. This patch updates sd->balance_interval only when we balance the
> domain.

I really need more than that.

Why is it wrong, what are the (measurable) effects of changing it and
how did it come to be this way.

I could of course go and try to reverse engineer your patch, but it
would be awesome if I didn't have to.
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