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feat: tune kernel huge pages

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RGBCube 2025-02-28 19:12:13 +03:00
parent c2acac6f3e
commit 7ef87ccfcd
Signed by: RGBCube
SSH key fingerprint: SHA256:CzqbPcfwt+GxFYNnFVCqoN5Itn4YFrshg1TrnACpA5M
1 changed files with 4 additions and 1 deletions
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5
hosts/best/postgresql.nix
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@ -1,6 +1,9 @@
{ self, ... }: {
imports = [(self + /modules/postgresql.nix)];
# postgres -C shared_memory_size_in_huge_pages -D /var/lib/postgresql/<version>.
boot.kernel.sysctl."vm.nr_hugepages" = 5265;
# Generated by <https://pgconfigurator.cybertec.at/>
services.postgresql.settings = {
# Connectivity
@ -11,7 +14,7 @@
shared_buffers = "10240 MB";
work_mem = "64 MB";
maintenance_work_mem = "620 MB";
huge_pages = "try"; # TODO: Tune kernel: <https://www.postgresql.org/docs/current/static/kernel-resources.html#LINUX-HUGE-PAGES>
huge_pages = "try";
effective_cache_size = "45 GB";
effective_io_concurrency = 100;
random_page_cost = 1.25;