Am 23.07.2018 um 13:38 schrieb Julien Rouhaud:
Hi,
On Mon, Jul 23, 2018 at 1:18 PM, Thomas Güttler
<guettliml@xxxxxxxxxxxxxxxxxx> wrote:
Is there a tool which does this for PostgreSQL?
Take a "snapshot" of what the server is doing about 10 times per second.
Write this to a file.
After N hours you can aggregate the file.
What does the server do most of the time?
Which tables/index gets used the most.
Before optimizing a database, I would like to know what is going
on in the production system.
I know that there are internal tables like pg_stat_statements.
But I guess doing a snapshot every N millseconds will present a
better picture of what is going in in real life.
Is there already a tool which goes this way?
You can look at powa (https://powa.readthedocs.io/) which aims to
provide this kind of information.
AFAIK powa is based on pg_stat_statements not on statistical samples.
But maye I am wrong.
Regards,
Thomas Güttler
--
Thomas Guettler http://www.thomas-guettler.de/
I am looking for feedback: https://github.com/guettli/programming-guidelines
