Getting time-dependent load statistics

On Fri, 20 Feb 2009, Torsten Bronger wrote:

Hall�chen!

Yesterday I ported a web app to PG. Every 10 minutes, a cron job
scanned the log files of MySQL and generated a plot showing the
queries/sec for the last 24h. (Admittedly queries/sec is not the
holy grail of DB statistics.)

But I still like to have something like this. At the moment I just
do the same with PG's log file, with

log_statement_stats = on

But to generate these plots is costly (e.g. I don't need all the
lines starting with !), and to interpret them is equally costly. Do
you have a suggestion for a better approach?

Have a look at http://pgfouine.projects.postgresql.org/

Hall�chen!

Torsten Bronger writes:

Yesterday I ported a web app to PG. Every 10 minutes, a cron job
scanned the log files of MySQL and generated a plot showing the
queries/sec for the last 24h. (Admittedly queries/sec is not the
holy grail of DB statistics.)

But I still like to have something like this.

Sorry, this got posted twice because the mod has a long time lag and
I thought that it was lost.

Tsch�,
Torsten.

--
Torsten Bronger, aquisgrana, europa vetus
Jabber ID: torsten.bronger@jabber.rwth-aachen.de

Torsten Bronger wrote:

Hall�chen!

Yesterday I ported a web app to PG. Every 10 minutes, a cron job
scanned the log files of MySQL and generated a plot showing the
queries/sec for the last 24h. (Admittedly queries/sec is not the
holy grail of DB statistics.)

But I still like to have something like this. At the moment I just
do the same with PG's log file, with

log_statement_stats = on

But to generate these plots is costly (e.g. I don't need all the
lines starting with !), and to interpret them is equally costly. Do
you have a suggestion for a better approach?

Tsch�,
Torsten.

If I understood you correctly you might get help from following:

http://pgfouine.projects.postgresql.org/

With Regards
Ashish Karalkar