Test effects of EBS striping with different stripe sizes on gp3 volumes.

• pgbench --read-only key fetches, CPU*4 parallelism
• pgbench index range scans, 10K row batches, CPU*2 parallelism
• full scans, no parallelism

• AWS CLI installed / configured
• pg-spot-operator Python CLI installed
• Ansible installed

1. Set target pggbench scale and needed storage size in header of launch_vms_and_run_test.sh
2. Inquiry which is the most affordable region currently for experimenting on EC2 pg_spot_operator --list-avg-spot-savings --region ^eu
3. Run the test

./launch_vms_and_run_test.sh eu-south-2

4. Analyze logs from the logs folder. pg_stat_statements output at end of the file.

Just change LOCAL_TEST=0 to LOCAL_TEST=1 in launch_vms_and_run_test.shand Ansible / pg-spot-operator won't be called and Postgres is expected to be at CONNSTR_TESTDB="host=/var/run/postgresql dbname=postgres" (pgbench_read_test.sh)