Re: ToDo List Item - System Table Index Clustering

On Wed, Jan 19, 2011 at 3:10 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
>> On Wed, Jan 19, 2011 at 2:26 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>>> Which brings up another point though. I have a personal TODO item to
>>> make the comments for operator support functions more consistent:
>>> http://archives.postgresql.org/message-id/21407.1287157253@sss.pgh.pa.us
>>> Should we consider removing those comments altogether, instead?
>
>> I could go either way on that.  Most of those comments are pretty
>> short, aren't they?  How much storage are they really costing us?
>
> Well, on my machine pg_description is about 210K (per database) as of
> HEAD.  90% of its contents are pg_proc entries, though I have no good
> fix on how much of that is for internal-use-only functions.  A very
> rough estimate from counting pg_proc and pg_operator entries suggests
> that the answer might be "about a third".  So if we do what was said in
> the above-cited thread, ie move existing comments to pg_operator and
> add boilerplate ones to pg_proc, we probably would pay <100K for it.

I guess that's not enormously expensive, but it's not insignificant
either. On my machine, a template database is 5.5MB.

--
Robert Haas
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