gador/nixpkgs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge pull request #67768 from peti/t/redis

Browse Source 
nixos/redis: disable transparent huge pages (TLP) before starting Redis
This commit is contained in:
Peter Simons
2019-09-01 08:49:25 +02:00
committed by GitHub
parent f7a856e4c5 afd448a9fa
commit 0808f5ad1d
1 changed files with 16 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
nixos/modules/services/databases/redis.nix
View File

@@ -40,7 +40,12 @@ in
enable = mkOption {
type = types.bool;
default = false;
description = "Whether to enable the Redis server.";
description = ''
Whether to enable the Redis server. Note that the NixOS module for
Redis disables kernel support for Transparent Huge Pages (THP),
because this features causes major performance problems for Redis,
e.g. (https://redis.io/topics/latency).
'';
};
package = mkOption {
@@ -224,6 +229,16 @@ in
environment.systemPackages = [ cfg.package ];
systemd.services.disable-transparent-huge-pages = {
enable = config.services.redis.enable;
description = "Disable Transparent Huge Pages (required by Redis)";
after = [ "sysinit.target" "local-fs.target" ];
before = [ "redis.service" ];
wantedBy = [ "redis.service" ];
script = "echo never >/sys/kernel/mm/transparent_hugepage/enabled";
serviceConfig.Type = "oneshot";
};
systemd.services.redis =
{ description = "Redis Server";