> I think we definitely need to tune this on a per-arch basis. There's no
> way that one-size-fits-all is going to fit a situation as complex as
> this (though we can definitely learn from each other's analysis).
agreed - although the tunable should be constant (if possible, or
boot-established but not /proc exported), and there should be as few
tunables as possible. We already tune some of our scheduler behavior to
the SMP cachesize. (the cache_decay_ticks SMP logic.)
Ingo
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