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Thread: Getting time-dependent load statistics

Getting time-dependent load statistics

From
Torsten Bronger
Date:
Hallöchen!

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?

Tschö,
Torsten.

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

Re: Getting time-dependent load statistics

From
Ben Chobot
Date:
On Fri, 20 Feb 2009, Torsten Bronger wrote:

> Hallöchen!
>
> 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/

Re: Getting time-dependent load statistics

From
Torsten Bronger
Date:
Hallöchen!

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.

Tschö,
Torsten.

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

Re: Getting time-dependent load statistics

From
Ashish Karalkar
Date:
Torsten Bronger wrote:
> Hallöchen!
>
> 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?
>
> Tschö,
> Torsten.
>
>
If I understood you correctly you might get help from following:

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


With Regards
Ashish Karalkar