Document LimitMEMLOCK configuration for services
@@ -344,6 +344,15 @@ all users, you can replace `user1` with `*`:
* soft memlock unlimited
```
+Note that settings in the /etc/security/limits.conf file don't apply to
+services. To increase the locked memory limit for a service you need to
+modify the application's systemd service file and add the line:
+
+```console
+[Service]
+LimitMEMLOCK=infinity
+```
+
## Hupgepage Settings ##
Users need to configure system hugepage to reserve 2MB-hugepages or
