Re: Vacuum thoughts - Mailing list pgsql-hackers

From Neil Conway
Subject Re: Vacuum thoughts
Date
Msg-id 1067644108.372.23.camel@tokyo
Whole thread Raw
In response to Re: Vacuum thoughts  (Jan Wieck <JanWieck@Yahoo.com>)
Responses Re: Vacuum thoughts  (Bruce Momjian <pgman@candle.pha.pa.us>)
List pgsql-hackers
On Mon, 2003-10-27 at 15:31, Jan Wieck wrote:
> Well, "partial solution" isn't quite what I would call it, and it surely 
> needs integration with sequential scans. I really do expect the whole 
> hack to fall apart if some concurrent seqscans are going on

I'd rather see us implement a buffer replacement policy that considers
both frequency + recency (unlike LRU, which considers only recency).
Ideally, that would work "automagically". I'm hoping to get a chance to
implement ARC[1] during the 7.5 cycle.

-Neil

[1]: http://citeseer.nj.nec.com/megiddo03arc.html




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