Re: Page replacement algorithm in buffer cache

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От Bruce Momjian
Тема Re: Page replacement algorithm in buffer cache
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Msg-id 20130326163923.GC20871@momjian.us
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Ответ на Re: Page replacement algorithm in buffer cache  (Greg Stark <stark@mit.edu>)
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On Fri, Mar 22, 2013 at 06:06:18PM +0000, Greg Stark wrote:
> On Fri, Mar 22, 2013 at 2:02 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > And we definitely looked at ARC
> 
> We didn't just look at it. At least one release used it. Then patent
> issues were raised (and I think the implementation had some contention
> problems).

The problem was cache line overhead between CPUs to manage the ARC
queues.

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + It's impossible for everything to be true. +



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