From 991608fd4e407d6dcec71dba7db72bf802580ce6 Mon Sep 17 00:00:00 2001
From: Klention Mali <45871249+klention@users.noreply.github.com>
Date: Thu, 19 Dec 2024 15:15:55 +0100
Subject: [PATCH] Auto se the number of max_worker_processes and
 max_parallel_workers based on system resources (#853)

---
 automation/vars/main.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/automation/vars/main.yml b/automation/vars/main.yml
index 7ef57c851..e8fa0c4fc 100644
--- a/automation/vars/main.yml
+++ b/automation/vars/main.yml
@@ -315,8 +315,8 @@ postgresql_parameters:
   - { option: "wal_receiver_status_interval", value: "10s" }
   - { option: "idle_in_transaction_session_timeout", value: "10min" }  # reduce this timeout if possible
   - { option: "jit", value: "off" }
-  - { option: "max_worker_processes", value: "24" }
-  - { option: "max_parallel_workers", value: "8" }
+  - { option: "max_worker_processes", value: "{{ [ansible_processor_vcpus | int, 16] | max }}" }
+  - { option: "max_parallel_workers", value: "{{ [(ansible_processor_vcpus | int // 2), 8] | max }}" }
   - { option: "max_parallel_workers_per_gather", value: "2" }
   - { option: "max_parallel_maintenance_workers", value: "2" }
   - { option: "tcp_keepalives_count", value: "10" }