Re: how test postgresql.conf settings?

If you HUP the database or reload the database the changes will take effect. Only in a very few cases you will have to restart the database. Can you give us more information regarding what changes you made to the postgresql.conf?

-Chandra Sekhar Surapaneni

________________________________

From: pgsql-admin-owner(at)postgresql(dot)org on behalf of Arnau Rebassa Villalonga
Sent: Wed 2/15/2006 4:39 AM
To: pgsql-admin(at)postgresql(dot)org
Subject: [ADMIN] how test postgresql.conf settings?

Hi all,

I'm testing different configurations of postgresql 8.1 running on
debian. The method I was following was:
- change the postgresql.conf
- restart postgres (/etc/init.d/postgresql restart )
- execute my test queries

I have noticed that this is not enough to flush the cache, I don't
know where it is, if at the raid controller, at OS or at postgresql
itself. Reboot the machine I don't think it's a good solution because it
takes quite long. Do you have any suggestion? BTW is there any tool to
stress the DB, I mean, create a set of queries to execute and throw a
configurable set of concurrent connections to check the performance?

Thanks to all
--
Arnau

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