Re: Escaping the ARC patent

Tom Lane wrote:
> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > So are you saying you are making T1, T2, B1, and B2 a fixed percentage
> > of the buffer cache rather than making them adjust over time?
> 
> B2 goes away entirely (if we keep four lists we violate claim 45) and
> the other lists become fixed length, yes.
> 
> We could also contemplate making them variable length according to some
> other set of rules than ARC's, but then you get into having to parse the
> other sixty-odd claims of the patent and decide what is a "different
> enough" rule.
> 
> At the moment I'm not seeing evidence that a variable policy beats a
> fixed policy anyway.  Unless someone comes up with a benchmark showing a
> substantial advantage for ARC over 2Q, I think we should just declare
> victory over this problem.  We have plenty of other tasks on our plates.

Agreed.

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