Databases performance tuning¶
By default Postgresql RDBMS configured to consume minimal system resources. This approach allows Postgresql to start on any server after installation. YETI as well as any other system uses Postgresql requires changing default configuration in order to archive best performance.
We recommends to change next configuration variables at /etc/postgresql/9.4/yeti/postgresql.conf
shared_buffers = 10GB work_mem = 8MB fsync = on checkpoint_segments = 30 checkpoint_timeout = 50min
Set shared_buffers variable to 1/3 of total RAM installed to server if you share this server with some another application. For example we recommends install yeti-web on same server as routing database. If your server is dedicated for postgresql set shared_buffers to 2/3 of your RAM.
When configuration changed you should restart your postgresql instance using service postgresql restart
Read Postgresql manual https://www.postgresql.org/docs/9.4/static/ to understand postgresql architecture and features