PostgreSQL configuration

How to tune PostgreSQL config file?

Written by Chinzorig Dandarchuluun (Sep. 19, 2018).

To install pgtune by using below code

sudo yum install pgtune

Go to the PostgreSQL data folder

cd /var/lib/pgsql/9.2/data 

The command will output new config file with settings roughly optimized for the server’s hardware.

pgtune -i postgresql.conf -o postgresql.conf.pgtune -T DW -c 1000

PG Tune Options

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• -i or –input-config : Specifies the current postgresql.conf file.

• -o or –input-config : Specifies the file name for the new postgresql.conf file.

• -M or –memory: Use this parameter to specify total system memory. If not specified, pgtune will attempt to detect memory size.

• -T or –type : Specifies database type. Valid options are: DW, OLTP, Web, Mixed, Desktop

• -c or –connections: Specifies number of maximum connections expected. If not specified, it depends on database type.

• -D or –debug : Enables debugging mode.

• -S or –settings: Directory where settings data files are located at.Defaults to the directory where the script is being run from. The RPM package includes a patch to use the correct location these files were installed into.

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Backup the current config file

sudo mv postgresql.conf postgresql.conf.backup

And then setup new config file

sudo mv postgresql.conf.pgtune postgresql.conf

Restart the server

service postgresql-9.2 restart