For production workloads, make sure the [Linux setting](https://www.kernel.org/doc/Documentation/sysctl/vm.txt) `vm.max_map_count` is set to at least 262144. On the OpenSearch Docker image, this setting is the default. To check, start a Bash session in the container and run:
```bash
cat /proc/sys/vm/max_map_count
```
To increase this value, you have to modify the Docker image. For other install types, add this setting to the host machine's `/etc/sysctl.conf` file with the following line:
```
vm.max_map_count=262144
```
Then run `sudo sysctl -p` to reload.
The [sample docker-compose.yml](../docker/#sample-docker-compose-file) file also contains several key settings:
-`bootstrap.memory_lock=true`
Disbles swapping (along with `memlock`). Swapping can dramatically decrease performance and stability, so you should ensure it is disabled on production clusters.
