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machines/bc01n05: postgres tuning 

Change-Id: I30925a84216b45bde9e92b67b007f15b2cdf58e8
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1481
Reviewed-by: q3k <q3k@hackerspace.pl>
master
implr 2023-03-18 19:27:34 +01:00 committed by implr
parent 821b839b16
commit 3b0887397a
1 changed files with 22 additions and 2 deletions
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24
cluster/machines/bc01n05.hswaw.net.nix
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@ -1,14 +1,16 @@
{ config, pkgs, lib, ... }:
with builtins;
let postgresPkg = pkgs.postgresql_14;
let
postgresPkg = pkgs.postgresql_14;
numCPUs = 16;
in rec {
networking.hostName = "bc01n05";
# TODO: undefine fqdn and define domain after big nix change
hscloud.base.fqdn = "${networking.hostName}.hswaw.net";
#networking.domain = "hswaw.net";
system.stateVersion = "22.05";
nix.maxJobs = 16;
nix.maxJobs = numCPUs;
### zfs
# randomly generated
@ -53,6 +55,24 @@ in rec {
package = postgresPkg;
enableTCPIP = true;
initdbArgs = ["--encoding='UTF8'" "--lc-collate='C'" "--lc-ctype='C'"];
settings = {
max_connections = 300;
shared_buffers = "4GB";
temp_buffers = "64MB";
work_mem = "64MB";
maintenance_work_mem = "258MB";
effective_io_concurrency = 10; # ssd, guess
maintenance_io_concurrency = 100; # ssd, guess
max_worker_processes = numCPUs;
max_parallel_workers = numCPUs;
max_parallel_maintenance_workers = 4;
wal_level = "logical";
wal_sync_method = "fsync"; # slightly faster (per pg_test_fsync) AND safer
full_page_writes = "off"; # partial writes impossible on zfs
wal_init_zero = "off"; # useless on CoW
wal_recycle = "off"; # same
random_page_cost = 2.0; # ssd, TODO maybe even lower?
};
ensureDatabases = ["synapse" "mediarepo"];
ensureUsers = [
{