📊 jtop¶

jtop can be installed with pip

sudo pip3 install -U jetson-stats

Don’t forget to logout/login or reboot your board

Run jtop¶

Simple and fast! You can write on your shell jtop and that’s it!

jtop

Other options are available with -h option:

nvidia@agx-orin:~$ jtop -h
usage: jtop [-h] [--no-warnings] [--restore] [--loop] [--color-filter] [-r REFRESH] [-p PAGE] [-v]

jtop is system monitoring utility and runs on terminal

optional arguments:
  -h, --help            show this help message and exit
  --health              Status jtop and fix (default: False)
  --error-log           Generate a log for GitHub (default: False)
  --no-warnings         Do not show warnings (default: False)
  --restore             Reset Jetson configuration (default: False)
  --loop                Automatically switch page every 5s (default: False)
  --color-filter        Change jtop base colors, you can use also JTOP_COLOR_FILTER=True (default: False)
  -r REFRESH, --refresh REFRESH
                        refresh interval (default: 500)
  -p PAGE, --page PAGE  Open fix page (default: 1)
  -v, --version         show program\'s version number and exit

You can change page using left, right arrow or TAB to change page.

If you want to know how is ti works, check this menu below:

How is it works

Options¶

There are different options available for jtop

Health¶

If something goes wrong, you can check the jtop status with

sudo jtop --health

This tool, will check and fix:

jetson-stats - Fix jetson-stats service
Permissions - Fix permissions for your user
variables - Check if are installed all variables Environment variables

Restore¶

If you want to restore the original board configuration you can simply write

jtop --restore

This command will restore the original configuration of:

jetson_clocks
fan
nvpmodel
jtop configuration

Color filter¶

This option change the red color for text and background to blue.

To enable this feature you can add this option

jtop --color-filter

or you can add in your .bashrc

JTOP_COLOR_FILTER=True

The output will be like the image below

Error-log¶

If your board is not included, jetpack missing, hardware missing, you can launch this script

jtop --error-log

This script generate a file jtop-error.log ready to be attached on your issue

Pages¶

jtop have four different pages to control your NVIDIA Jetson:

ALL Are collected all information about your board: CPUs status, Memory, GPU, disk, fan and all status about jetson_clocks, NVPmodel and other
GPU A real time GPU history about your NVIDIA Jetson
CPU A real time CPU plot of NVIDIA Jetson
MEM A real time Memory chart and swap monitor
ENG A real time list with the status of all engines
CTRL Enable/Disable jetson_clocks, nvpmodel or fan directly from here
INFO All information about libraries, CUDA, Serial Number, interfaces, …

ALL¶

In this page are summarized all information about your board.

CPU For each CPU in this page the color is the percentage of utilization of: (summarized page 3)
- Green - user
- Yellow - nice
- Red - system
Memory Each bar describe the status of your device (summarized page 4)
1. Memory - RAM status
  
  Cyan - Used memory
  
  Green - GPU shared memory
  
  Blue - Buffers memory
  
  Yellow - Cached memory
2. Swap
  
  Red - Swap memory
  
  Yellow - Cached swap memory
3. EMC (if available)
  
  Frequency EMC
  
  percentage bandwidth used at Frequency
4. Iram (if available)
System In this section are collected many info about (summarized page 6)
- Fan speed and RPM
- Status jetson_clocks (if available)
- Status NVPmodel (if available)
GPU Current GPU status (summarized page 2)
Disk Disk space utilization
GPU processes GPU processes You can sort the table clicking on each title on the page
HW Engines (If available) all engines running on your board (summarized page 5)
Temperatures Status temperatures of your devices
- If Yellow warning zone over 84 degree
- If red critical zone over 100 degree
Power Status (summarized page 6)
- For each rail there are instantaneous Power and average power
- The last power in bold is the total or estimated total

GPU¶

In this page the GPU status. A detailed documentation of this output is available at jtop.jtop.gpu

GPU In this chart are collected many information about the integrated GPU, starting from the title:
- iGPU (integrated GPU)
- name GPU
- Load percentage
- Governor GPU
GPU Shared RAM Status Shared GPU. (In grey the total used memory)
Flags GPU Flags
- 3D Scaling You can enable and disable the 3D scaling on your board
- Railgate
- Power control
- TPC PG (for NVPmodel)
GPU Frequency This bar show the the minimum and maximum Frequency and on right side the current Frequency. Can be also available the GPC frequency
GPU processes GPU processes You can sort the table clicking on each title on the page

CPU¶

In this page there is the CPU status of each core. A detailed documentation of this output is available at jtop.jtop.cpu

ALL Collected status from all CPU
Core For each core there is a chart with load and governor
Model CPU model processor
CPU Frequency This bar show the the minimum and maximum Frequency and on right side the current Frequency.

MEM¶

Memory and Swap, From this page you can also enable/disable a new swap or clean the cache. A detailed documentation of this output is available at jtop.jtop.memory

Memory It’s a chart with 10-second history of the RAM status. Each color is also described in the legend on the right. On the title is also available the Large Free Block (lfb) in 4MB
- Cyan - Used memory
- Green - GPU shared memory
- Blue - Buffers memory
- Yellow - Cached memory
Emc & IRAM In this area is visualized a linear gauge for EMC and IRAM
1. EMC (if available)
  
  Frequency EMC
  
  percentage bandwidth used at Frequency
2. Iram (if available)
Swap In this section you can control your swap, enable a new one and also clear the cache. Each color describe a type of swap.
- Cyan - zram
- Yellow - swap file
- Magenta - swap partition
- Green - All other type of swap

For each swap is also described the priority (P5, P-2) written on the left side of the bar

Controls¶

From this page you can click or press from your keyboard:

c Clear cache
s Create new swap
b Set swap on boot
+ and - Increase and decrease swap size

If you want to remove one, you can select one from the table and press on disable

ENG¶

This page is Automatically generated from your board and is a list of all engines. All output is available also from jtop.jtop.engine

You can find different linear gauges:

This type if for engines that are not available a minimum and a maximum frequency. In this case you can read only the current frequency on right.
This engine has available the minimum and maximum frequency. In this case you can read at which current frequency is running
If there are engines from the same main group are all collected on the same line

CTRL¶

This page allow you to control your device, starting from jtop.jtop.fan, jtop.jtop.jetson_clocks and jtop.jtop.nvpmodel.

Show the fan name, PWM and if available the revolution per minute (RPM). You can also increase/decrease the speed pressing buttons [-] [+]
You can select the fan profile available on your board, more details in jtop.jtop.fan
It is a real time chart with the current fan speed
You can enable/disable jtop.jtop.jetson_clocks and set on boot (Note: jetson_clocks start only after 60s from up time)
You can select which NVPmodel you want to use on your board. Where you see the letter “D” means is the default configuration. If the mode is colored in Amber, it means that to apply need to reboot the board.
A detailed table with Power, Volt and Current of your board. There is also teh Warning and Critical current before the board fail. More info jtop.jtop.power

If you press a mode that need a reboot you will see a dialog message like this

You can chosse between [Force and reboot] or [Skip] the operation

Danger

If you click on [Force and reboot] the board will be rebooted immediately without any warning.

Controls¶

From this page you can click or press from your keyboard:

s Enable/Disable jetson_clocks (Note: jetson_clocks start only after 60s from up time)
e Set/Deselect jetson_clocks on board boot
+ and - Increase and decrease the NVPmodel

INFO¶

This page show all technical information about your board. This output is available jtop.jtop.board.

Compare all previous versions, now the Serial number is hidden and you can enable only clicking on the area or pressing the key s.

Uninstall¶

For a complete and manual uninstall of this package on your device there are few steps to do

Warning

You need super user to execute the commands

# Restore board configuration
jtop --restore
# Stop, disable and remove jtop.service
systemctl stop jtop.service
systemctl disable jtop.service
rm /etc/systemd/system/jtop.service
# reload services
systemctl daemon-reload

# remove jtop pipe
rm /run/jtop.sock

# Remove enviroment variables
rm /etc/profile.d/jtop_env.sh

# Uninstall python package
pip3 uninstall jetson-stats