| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Mike Mascari <mascarm(at)mascari(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Temp tables and LRU-K caching |
| Date: | 2002-09-23 16:36:41 |
| Message-ID: | 200209231636.g8NGafx24942@candle.pha.pa.us |
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| Lists: | pgsql-hackers |
Tom Lane wrote:
> Another thing I'd like to see in the near future is a configurable
> setting for the amount of memory space that can be used for temp-table
> buffers. The current setting is ridiculously small (64*8K IIRC), but
> there's not much point in increasing it until we also have a smarter
> management algorithm for the temp buffers. I've asked Neil to look at
> making the improved LRU-K buffer management algorithm apply to temp
> buffers as well as regular shared buffers.
Speaking of sizing, I wonder if we should query about the amount of RAM
in the machine either during initdb or later and size based on that.
In other words, if we add a GUC variable that shows the amount of RAM,
we could size things based on that value.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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