Attempt to tune PSQL for Hydra

Signed-off-by: magic_rb <magic_rb@redalder.org>

nixng/containers/hydra/postgresql.nix

@@ -1,16 +1,21 @@
-{ makeSystem
+{
-, nixpkgs
+  makeSystem,
-}:
+  nixpkgs,
-let
+}: let
-  inherit (nixpkgs.lib)
+  inherit
-    singleton;
+    (nixpkgs.lib)
+    singleton
+    ;
 in
-makeSystem {
+  makeSystem {
-  system = "x86_64-linux";
+    system = "x86_64-linux";
-  name = "nixng-hydra-postgresql";
+    name = "nixng-hydra-postgresql";
-  inherit nixpkgs;
+    inherit nixpkgs;
-  config = { pkgs, config, ... }:
+    config = {
-    {
+      pkgs,
+      config,
+      ...
+    }: {
       config = {
         dumb-init = {
           enable = true;
@@ -26,12 +31,36 @@ makeSystem {
           authentication = "host  all all all          md5";
 
           config = {
-            max_connections = 1024;
+            # DB Version: 12
+            # OS Type: linux
+            # DB Type: mixed
+            # Total Memory (RAM): 1 GB
+            # CPUs num: 12
+            # Connections num: 512
+            # Data Storage: hdd
+
+            max_connections = 512;
+            shared_buffers = "256 MB";
+            effective_cache_size = "768 MB";
+            maintenance_work_mem = "64 MB";
+            checkpoint_completion_target = 0.9;
+            wal_buffers = "7864 kB";
+            default_statistics_target = 100;
+            random_page_cost = 4;
+            effective_io_concurrency = 2;
+            work_mem = "64 kB";
+            huge_pages = "off";
+            min_wal_size = "1 GB";
+            max_wal_size = "4 GB";
+            max_worker_processes = 12;
+            max_parallel_workers_per_gather = 4;
+            max_parallel_workers = 12;
+            max_parallel_maintenance_workers = 4;
           };
 
-          ensureDatabases = [ "hydra" ];
+          ensureDatabases = ["hydra"];
           ensureExtensions = {
-            "pg_trgm" = [ "hydra" ];
+            "pg_trgm" = ["hydra"];
           };
           ensureUsers = singleton {
             name = "hydra";
@@ -42,4 +71,4 @@ makeSystem {
         };
       };
     };
-}
+  }

terranix/containers/hydra/job.hcl

@@ -186,8 +186,8 @@ EOF
 
       resources {
         cpu = 500
-        memory = 128
+        memory = 1024
-        memory_max = 256
+        memory_max = 1024
       }
 
       template {