System Memory

Use an SSH tool such as Xshell to log in as the video stream cloud phone O&M user (for example, root) to the server where the cloud phone is deployed.
Switch to the root user.
```
# su - root
```
Check the drive usage of the video stream cloud phone server.
```
# free
```
You can run the free command to query the system memory usage, including the physical memory, virtual swap file memory, and shared memory regions, as well as buffers used by system cores. The memory usage of the video stream cloud phone can also be queried by using this command.

Parent topic: Performance Monitoring