Enabling Smart Prefetch

Start the prefetch service acache_client.
```
systemctl start acache_client
```
Check whether the prefetch service is enabled.
1. Check whether the prefetch service (acache_client) is enabled successfully.
```
systemctl status acache_client
```
  If information similar to the following is displayed, the prefetch service is started successfully:
2. Check whether character devices exist in the /dev directory.
```
ls /dev/ | grep acache
```
  Information similar to the following command output is displayed if a character device exists:

Parent topic: Using the Tool