Re: Availability of pg_backend_pid() immediately after connection establishment

Magnus Hagander <mha@sollentuna.net>

From: "Magnus Hagander" <mha@sollentuna.net>
To: "Hari Bhaskaran" <hbhaskaran@gmail.com>, <pgsql-general@postgresql.org>
Date: 2006-11-02T09:39:06Z
Lists: pgsql-general
> Someone in this group mentioned a while back that 
> pg_backend_pid() function works only after some 1/2 second 
> after the connection has been established.  This had 
> something to do with the stats collector to make its sweep 
> every .5 seconds?.  Does anyone have more information on this?

No, pg_backend_pid() returns MyProcPid, which is set on backend startup.

However, the different pg_stat_* views won't work until a message has
been passed down to the stats collector, that is correct.

//Magnus