On Wed, 2011-09-07 at 10:02 +0800, Wu Fengguang wrote:
> > also, do the two other line segments connect on the transition
> > point?
>
> I guess we can simply unify the other two formulas into one:
>
> } else if (period <= max_pause / 4 &&
> pages_dirtied >= current->nr_dirtied_pause) {
> current->nr_dirtied_pause = clamp_val(
> ==> dirty_ratelimit * (max_pause / 2) / HZ,
> pages_dirtied + pages_dirtied / 8,
> pages_dirtied * 4);
> } else if (pause >= max_pause) {
> current->nr_dirtied_pause = 1 | clamp_val(
> ==> dirty_ratelimit * (max_pause / 2) / HZ,
> pages_dirtied / 4,
> pages_dirtied - pages_dirtied / 8);
> }
There's still the clamping, that combined with the various conditionals
make it very hard to tell if the functions are connected or jump around.
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