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postgresql: tune db parameters

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fixes pleroma timeouts
This commit is contained in:
Colin 2023-08-17 01:26:30 +00:00
parent d0af645af8
commit 2c4d30b5ec
1 changed files with 30 additions and 2 deletions
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32
hosts/by-name/servo/services/postgres.nix
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@ -1,5 +1,10 @@
{ pkgs, ... }:
let
GiB = n: MiB 1024*n;
MiB = n: KiB 1024*n;
KiB = n: 1024*n;
in
{
sane.persist.sys.plaintext = [
# TODO: mode?
@ -39,10 +44,33 @@
# LC_CTYPE = "C";
# '';
# TODO: perf tuning
# perf tuning
# - for recommended values see: <https://pgtune.leopard.in.ua/>
# - for official docs (sparse), see: <https://www.postgresql.org/docs/11/config-setting.html#CONFIG-SETTING-CONFIGURATION-FILE>
# services.postgresql.settings = { ... }
services.postgresql.settings = {
# DB Version: 15
# OS Type: linux
# DB Type: web
# Total Memory (RAM): 32 GB
# CPUs num: 12
# Data Storage: ssd
max_connections = 200;
shared_buffers = "8GB";
effective_cache_size = "24GB";
maintenance_work_mem = "2GB";
checkpoint_completion_target = 0.9;
wal_buffers = "16MB";
default_statistics_target = 100;
random_page_cost = 1.1;
effective_io_concurrency = 200;
work_mem = "10485kB";
min_wal_size = "1GB";
max_wal_size = "4GB";
max_worker_processes = 12;
max_parallel_workers_per_gather = 4;
max_parallel_workers = 12;
max_parallel_maintenance_workers = 4;
};
# daily backups to /var/backup
services.postgresqlBackup.enable = true;