Re: Configuration of statistical views - Mailing list pgsql-hackers

From Jan Wieck
Subject Re: Configuration of statistical views
Date
Msg-id 200106291836.f5TIaDh13333@jupiter.us.greatbridge.com
Whole thread Raw
In response to Configuration of statistical views  (Jan Wieck <JanWieck@Yahoo.com>)
List pgsql-hackers
Bruce Momjian wrote:
> > Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > >> If  somebody  wants  to  see  an applications querystring (at
> > >> least the first 512 bytes) just in case something goes  wrong
> > >> and  the client hangs, he'd have to run querystring reporting
> > >> all the time either way.
> >
> > > Agreed.  That should be on all the time.
> >
> > "On by default", sure.  "On all the time", I'm not sold on.
>
> So we will havre GUC for stats and query string.  Fine.  Set query
> string on by default and stats off by default.  Good.
>
> >
> > But anyway, we seem to be converging on the conclusion that setting
> > up a GUC variable will do fine, at least until there is definite
> > evidence that it won't.
> >
> > Probably there need to be at least 2 variables: (a) a PGC_POSTMASTER
> > variable that controls whether the stats collector is even started,
> > and (b) PGC_USERSET variable(s) that enable a particular backend to
> > send particular kinds of data to the collector.  Note that, for example,
> > backend start/stop events probably need to be reported whenever the
> > postmaster variable is set, even if all the USERSET variables are off.
>
> And another one to control whether the daemon is even running.  OK.
   Forcing the other two to stay off if no daemon present.


Jan

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