> > Would it be possible to maintain a dirty-rate count
> > for the dirty buffers?
> >
> > For example, we it is possible to figure an approximate
> > disk subsystem speed from most of the given information.
>
> Disk speed is difficult. I may enable and disable swap on any number of
...
> You may be able to get some useful approximations, but you
> will probably not be able to get good numbers in all cases.
a useful approximation would be simply an idle flag.
for instance, if the disk is idle, then cleaning a few
inactive-dirty pages would make perfect sense, even in
the absence of memory pressure.
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