| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Greg Stark <stark(at)mit(dot)edu> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Cédric Villemain <cedric(dot)villemain(dot)debian(at)gmail(dot)com>, Mitsuru IWASAKI <iwasaki(at)jp(dot)freebsd(dot)org>, greg <greg(at)2ndquadrant(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: patch for new feature: Buffer Cache Hibernation |
| Date: | 2011-10-16 18:12:40 |
| Message-ID: | 25773.1318788760@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Greg Stark <stark(at)mit(dot)edu> writes:
> On Fri, Oct 14, 2011 at 4:29 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Right. I think this one falls into my class #2, ie, we have no idea how
>> to implement it usefully. Doesn't (necessarily) mean that the core
>> concept is without merit.
> Hm. given that we have an implementation I wouldn't say we have *no*
> clue. But there are certainly some parts we don't have consensus yet
> on. But then working code sometimes trumps a lack of absolute
> consensus.
In this context "working" means "shows a significant performance
benefit", and IIRC we don't have a demonstration of that. Anyway this
was all discussed back in May.
regards, tom lane
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