Parallel Index Scan Implementation

On Mon, Nov 27, 2023 at 4:11 AM Brajendra Pratap Singh <
singh.bpratap766@gmail.com> wrote:

Hi Postgresql Experts,

We have a basic requirement where we need to implement the parallel index
scan instead of parallel seq scan at table level. Please suggest the best
way to do this.

Postgresql DB Version : 12.6

That's far behind the latest patch level.

Table size : 2-5 GB

OS : Centos-7

RAM : 96 GB
CPU : 32

shared_buffer=20GB

Plural: shared_buffers

Effective_cache_size=60GB

Max_worker_process = 32
Max_parallel_worker=32
Max_parallel_worker_per_gather=8

Please let me know if any further details required .

Is there proper index support on the relevant columns? Have you analyzed
the tables? Are the values you're filtering on uncommon enough for PG to
think that indexes are relevant?