Re: Determining server load - Mailing list pgsql-general

From Israel Brewster
Subject Re: Determining server load
Date
Msg-id 6AB94266-1722-4DE5-817F-8146AEB0F1EA@ravnalaska.net
Whole thread Raw
In response to Re: Determining server load  (Melvin Davidson <melvin6925@gmail.com>)
Responses Re: Determining server load  (Jonathan Vanasco <postgres@2xlp.com>)
Re: Determining server load  (Melvin Davidson <melvin6925@gmail.com>)
List pgsql-general
>I'm still curious as to how I can track concurrent connections, ...

Have you considered enabling the following  in postgresql.conf?
log_connections=on
log_disconnections=on

It will put a bit of a bloat in you postgres log, but it will all allow you extract connects/disconnects over a time range. That should allow you
to determine concurrent connections during that that.

I do have those on, and I could write a parser that scans through the logs counting connections and disconnections to give a number of current connections at any given time. Trying to make it operate "in real time" would be interesting, though, as PG logs into different files by day-of-the-week (at least, with the settings I have), rather than into a single file that gets rotated out. I was kind of hoping such a tool, such as pgbadger (which, unfortunately, only seems to track connections per second and not consecutive connections), already existed, or that there was some way to have the database itself track this metric. If not, well, I guess that's another project :)

-----------------------------------------------
Israel Brewster
Systems Analyst II
Ravn Alaska
5245 Airport Industrial Rd
Fairbanks, AK 99709
(907) 450-7293
-----------------------------------------------



Melvin Davidson
I reserve the right to fantasize.  Whether or not you
wish to share my fantasy is entirely up to you.


pgsql-general by date:

Previous
From: Kevin Grittner
Date:
Subject: Re: isnull() function in pgAdmin3
Next
From: Adrian Klaver
Date:
Subject: Re: Determining server load