→ Applies to: SynetoOS 6.x
htop command provides an interactive, real-time view of system processes for monitoring CPU, memory, and resource usage.
Main controls include: ↑/↓ (navigate), Enter (select), Space (mark/unmark), u (filter by user), s (trace system calls), l list open files.
Step 1. Connect to SynetoOS appliance via SSH as admin
ssh admin@<your_ip_address_or_hostname>
Step 2. Get root privileges
sudo su -
Step 3. Run command
htopEXAMPLE
Color legend
| Category | Bar color | Usage parameter |
| CPU | Green | User mode CPU time |
| CPU | Red | Kernel mode CPU time |
| CPU | Blue | Nice mode CPU time |
| CPU | Yellow | I/O wait time |
| Memory | Green | Used memory |
| Memory | Blue | Used memory for buffers |
| Memory | Yellow | Used memory for cache |
| Swap | Green | Used swap |
| Swap | Red | Available swap |
Process list
| Value | Utility |
| PID | Process identifier |
| USER | Name of the user who started the process |
| PRI | Process priority |
| NI | Nice value |
| VIRT | Virtual memory used |
| RES | Resident memory used |
| SHR | Shared memory used |
| S | Process state sleeping |
| R | Process state running |
| Z | Process state zombie |
| %CPU | Percentage of CPU usage |
| %MEM | Percentage of memory usage |
| TIME+ | Total CPU time used |
| COMMAND | Name of the command that started the process |
Status and command bar
| Command | Utility |
| F1 (Help) | Shows the help |
| F2 (Setup) | Opens the setup menu |
| F3 (Search) | Allows searching for a process |
| F4 (Filter) | Allows filtering processes |
| F5 (Tree) | Change appearance to tree format |
| F6 (Sort) | Change sorting criteria |
| F7 (Nice -) | Increases the priority of a process |
| F8 (Nice +) | Decreases the priority of a process |
| F9 (Kill) | Terminates a process |
| F10 (Quit) | Exits htop command |