Merge pull request #443 from NixOS/postgres-jit_no-full-page-writes

haumea/postgresql: use jit package, disable full page writes

delft/haumea/postgresql.nix

@@ -20,13 +20,17 @@
 
   services.postgresql = {
     enable = true;
+    enableJIT = true;
     package = pkgs.postgresql_16;
     dataDir = "/var/db/postgresql/16";
     # https://pgtune.leopard.in.ua/#/
     logLinePrefix = "user=%u,db=%d,app=%a,client=%h ";
     settings = {
       listen_addresses = lib.mkForce "10.254.1.9";
 
+      # https://vadosware.io/post/everything-ive-seen-on-optimizing-postgres-on-zfs-on-linux/#zfs-related-tunables-on-the-postgres-side
+      full_page_writes = "off";
+
       checkpoint_completion_target = "0.9";
       default_statistics_target = 100;