| From: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
|---|---|
| To: | "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Vacuum questions... |
| Date: | 2005-09-25 04:29:54 |
| Message-ID: | 20050925042953.GC14362@surnet.cl |
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| Lists: | pgsql-hackers |
On Sat, Sep 24, 2005 at 07:17:38PM -0500, Jim C. Nasby wrote:
> Finally, if vacuum_delay is enabled, does vacuum_cost_page_miss consider
> a miss as not in the database buffer, or not in the kernel buffer?
The database buffer.
> I
> remember discussions about trying to track IO request times to try and
> determine if something came out of kernel buffers or not, but AFAIK
> that's all vaporware right now...
I don't remember the discussion, but it certainly hasn't been
implemented.
--
Alvaro Herrera http://www.PlanetPostgreSQL.org
"Escucha y olvidarás; ve y recordarás; haz y entenderás" (Confucio)
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