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83 lines
2.5 KiB
Nix
83 lines
2.5 KiB
Nix
{ pkgs, ... }:
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{
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services.postgresql = {
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enable = true;
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package = pkgs.postgresql_18_jit;
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initdbArgs = [
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"--encoding=UTF8"
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"--locale=C.UTF-8"
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"--data-checksums"
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"--allow-group-access"
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];
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enableTCPIP = true;
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authentication = pkgs.lib.mkOverride 10 ''
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# TYPE, DATABASE, USER, ADDRESS, METHOD
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local all all trust
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host all all 127.0.0.1/32 trust
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host all all ::1/128 trust
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host all all 0.0.0.0/0 md5
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'';
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initialScript = pkgs.writeText "backend-initScript" ''
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CREATE ROLE spacebar WITH LOGIN PASSWORD 'spacebar' CREATEDB;
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CREATE DATABASE spacebar;
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GRANT ALL PRIVILEGES ON DATABASE spacebar TO spacebar;
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'';
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settings = {
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# https://pgconfigurator.cybertec.at/
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max_connections = 2500;
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superuser_reserved_connections = 3;
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shared_buffers = "128MB";
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work_mem = "64MB";
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maintenance_work_mem = "512MB";
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huge_pages = "try";
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effective_cache_size = "512MB";
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effective_io_concurrency = 100;
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random_page_cost = 1.1;
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# can use this to view stats: SELECT query, total_time, calls, rows FROM pg_stat_statements ORDER BY total_time DESC LIMIT 10;
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shared_preload_libraries = "pg_stat_statements";
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track_io_timing = "on";
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track_functions = "pl";
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"pg_stat_statements.max" = "10000"; # additional
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"pg_stat_statements.track" = "all"; # additional
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wal_level = "replica";
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max_wal_senders = 0;
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synchronous_commit = "on"; # was ond3
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checkpoint_timeout = "15min";
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checkpoint_completion_target = "0.9";
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max_wal_size = "2GB";
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min_wal_size = "1GB";
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wal_compression = "off";
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wal_buffers = "-1";
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wal_writer_delay = "500ms"; # was 100
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wal_writer_flush_after = "32MB"; # was 1
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#checkpoint_segments = "64"; # additional
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default_statistics_target = "250"; # additional
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bgwriter_delay = "200ms";
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bgwriter_lru_maxpages = "100";
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bgwriter_lru_multiplier = "2.0";
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bgwriter_flush_after = "0";
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max_worker_processes = "64"; # was 14
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max_parallel_workers_per_gather = "32"; # was 7
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max_parallel_maintenance_workers = "32"; # was 7
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max_parallel_workers = "64"; # was 14
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parallel_leader_participation = "on";
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enable_partitionwise_join = "on";
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enable_partitionwise_aggregate = "on";
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jit = "on";
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max_slot_wal_keep_size = "1GB";
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track_wal_io_timing = "on";
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maintenance_io_concurrency = "4";
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wal_recycle = "on";
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};
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};
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}
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