cleanup, helperbot fixes

neptunium/srv/docker/postgres/compose.yaml

@@ -3,7 +3,7 @@ services:
     # custom image for docker with pgroonga support
     image: groonga/pgroonga:latest-alpine-17
     restart: always
-    shm_size: 6GB
+    shm_size: 4GB
     volumes:
       - ./db:/var/lib/postgresql/data
     networks:

neptunium/srv/docker/postgres/db/postgresql.conf

@@ -0,0 +1,28 @@
+# PGTune for Neptunium.
+# Append to the bottom of the autogenerated postgresql.conf file made on first container creation.
+
+# DB Version: 17
+# OS Type: linux
+# DB Type: oltp
+# Total Memory (RAM): 8 GB
+# CPUs num: 4
+# Connections num: 300
+# Data Storage: ssd
+
+max_connections = 300
+shared_buffers = 2GB
+effective_cache_size = 6GB
+maintenance_work_mem = 512MB
+checkpoint_completion_target = 0.9
+wal_buffers = 16MB
+default_statistics_target = 100
+random_page_cost = 1.1
+effective_io_concurrency = 200
+work_mem = 6898kB
+huge_pages = off
+min_wal_size = 2GB
+max_wal_size = 8GB
+max_worker_processes = 4
+max_parallel_workers_per_gather = 2
+max_parallel_workers = 4
+max_parallel_maintenance_workers = 2