If you develop using postgres, an easy way to gain some speed when running tests etc. is to tweak it’s settings to use more system resources.
A great tool for this is https://pgtune.leopard.in.ua/.
Input your system info and you get list ot settings back. Put those into your
config and restart the server (
sudo systemctl restart postgresql).
To locate your postgres.conf file:
psql -U postgres -c 'SHOW config_file'.
To see how may CPU’s you have:
lscpu | egrep 'Model name|Socket|Thread|NUMA|CPU\(s\)'
With 16 CPU’s and 26GB memory, my config looks like this:
# DB Version: 11 # OS Type: linux # DB Type: web # Total Memory (RAM): 26 GB # CPUs num: 16 # Data Storage: ssd max_connections = 200 shared_buffers = 6656MB effective_cache_size = 19968MB maintenance_work_mem = 1664MB checkpoint_completion_target = 0.9 wal_buffers = 16MB default_statistics_target = 100 random_page_cost = 1.1 effective_io_concurrency = 200 work_mem = 8519kB min_wal_size = 1GB max_wal_size = 4GB max_worker_processes = 16 max_parallel_workers_per_gather = 4 max_parallel_workers = 16 max_parallel_maintenance_workers = 4