Re: GUC variable for setting number of local buffers

Markus Bertheau wrote:
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> ? ???, 19/03/2005 ? 12:57 -0500, Tom Lane ?????:
>
> > It's already true that the individual buffers, as opposed to the buffer
> > descriptors, are allocated only as needed; which makes the overhead
> > of a large local_buffers setting pretty small if you don't actually do
> > much with temp tables in a given session. So I was thinking about
> > making the default value fairly robust, maybe 1000 (as compared to
> > the historical value of 64...).
>
> Why does the dba need to set that variable at all then?

It is like sort_mem that is local memory but is limited so a single
backend does not exhaust all the RAM on the machine.

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