Re: Open items - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: Open items
Date
Msg-id 200408061613.i76GD5V11019@candle.pha.pa.us
Whole thread Raw
In response to Re: Open items  ("Marc G. Fournier" <scrappy@postgresql.org>)
Responses Re: Open items
List pgsql-hackers
If you change shared_buffers to 2000, remove the comment and reload, the
variable is now 2000.  If you comment out the variable and reload again,
it is still 2000, not the default.

---------------------------------------------------------------------------

Marc G. Fournier wrote:
> On Fri, 6 Aug 2004, Bruce Momjian wrote:
> 
> > Marc G. Fournier wrote:
> >>
> >> Hrmmm, stupid question here, but why not just change hte postgresql.conf
> >> to be those variables that *are* changed from the default, with a simple
> >> comment pointing to the documention for the rest?  the benefit of that is
> >> that at lesat the documentation has fuller descriptions of what the
> >> variables are for ...
> >>
> >> *that* could be easily done after beta ...
> >
> > Not sure why removing the comments is seen as good myself, but I think
> > the idea was that if you comment out something and change the default,
> > you assume that commenting it out returns it to the default, though it
> > does not.
> 
> 'k, now you've totally confused me ... if you comment something out, and 
> it doesn't return to the default, where does it go to?
> 
> my understanding was that the 'beef' was that the defaults that are 
> displayed on each of the variables in postgresql.conf file don't 
> necessarily match the defaults compiled into the backend ... which, I 
> *think* is what you meant in the above? :)
> 
> Right now, if you install postgresql, there are various variables 
> added/set in the postgresql.conf file (notably the stuff that Tom did with 
> the shared memory buffer) ... with the rest being "what could be the 
> default, but may not be" for the commented out variables ... my suggestion 
> is to remove the commented out variables altogether, and change the file 
> to something like:
> 
> #
> # for a complete list of GUC variables, see ...
> #
> <put 'live/set' variables here>
> 
> 
> ----
> Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
> Email: scrappy@hub.org           Yahoo!: yscrappy              ICQ: 7615664
> 

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
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