Re: [PATCH 4/4] writeback: reduce per-bdi dirty threshold ramp uptime

[Peter Zijlstra]

On Tue, 2011-05-24 at 14:24 +0200, Peter Zijlstra wrote:
> Again, if we then measure t in the same events as x, such that:
> 
>  t = \Sum_i x_i

> However, if you start measuring t differently that breaks, and the
> result is no longer normalized and thus not suitable as a proportion.

Ah, I made a mistake there, your proposal would keep the above relation
true, but the discrete periods t_i wouldn't be uniform.

So disregard the non normalized criticism.

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