server: tweak postgresql to more caching

disko/nas_luks.nix

@@ -0,0 +1,47 @@
+{
+  disko.devices = {
+    disk = {
+      sda = {
+        type = "disk";
+        device = "/dev/sda";
+        content = {
+          type = "gpt";
+          partitions = {
+            luks = {
+              size = "100%";
+              content = {
+                type = "luks";
+                name = "NAS-RAID";
+                askPassword = true;
+                # disable settings.keyFile if you want to use interactive password entry
+                #passwordFile = "/tmp/secret.key"; # Interactive
+                settings = {
+                  allowDiscards = true;
+                };
+                content = {
+                  type = "btrfs";
+                  extraArgs = [ "-f -L NAS-RAID" ];
+                  subvolumes = {
+                    "@" = {
+                      mountpoint = "/mnt/Pluto";
+                      mountOptions = [ "compress=zstd" "noatime" "ssd" "discard=async" ];
+                    };
+                    "@/Backups";
+                    "@/Media";
+                    "@/Games";
+                    "@/IT";
+                    "@/Rest";
+                    "@snapshots" = {
+                      mountpoint = "/mnt";
+                      mountOptions = [ "compress=zstd" "noatime" "ssd" "discard=async" ];
+                    };
+                  };
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

modules/services/server/postgresql.nix

@@ -12,8 +12,9 @@
         max_connections = 200;
         listen_addresses = "localhost";
         password_encryption = "scram-sha-256";
-        shared_buffers = "512MB";
-        work_mem = "8MB";
+        shared_buffers = "2GB";
+        work_mem = "1GB";
+        maintence_work_mem = "500MB"
         autovacuum_work_mem = -1;
         min_wal_size = "1GB";
         max_wal_size = "4GB";