System Memory

Use an SSH tool such as Xshell to log in to the server where the video stream cloud phone is deployed as the cloud phone O&M user (for example, root).
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