Re: ARC patent

Tom Lane wrote:
> Neil Conway <neilc(at)samurai(dot)com> writes:
>
>>FYI, IBM has applied for a patent on ARC (AFAICS the patent application
>>is still pending, although the USPTO site is a little hard to grok):
>
>
>>http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220040098541%22.PGNR.&OS=DN/20040098541&RS=DN/20040098541
>
>
> Ugh. We could hope that the patent wouldn't be granted, but I think
> it unlikely, unless Jan is aware of prior art (like a publication
> predating the filing date). I fear we'll have to change or remove
> that code.
>
> regards, tom lane
>
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And what about "CAR: Clock with Adaptive Replacement"?

I found something here:
http://www.cs.duke.edu/csl/usenix/04fast/tech/bansal.html

Is it worth investigating?

best wishes,
marian