How to Test Network Speed

Prerequisites

Before testing network speed, make sure you have:

• SSH access to your VPS
• iperf3 installed (or second server for accurate testing)

Method 1: Internet Speed Test (speedtest-cli)

Connect to your VPS:

ssh hxroot@YOUR_SERVER_IP -p 22

sudo apt install speedtest-cli -y

speedtest-cli

Simple output:

speedtest-cli --simple

Method 2: Local Network Speed Test (iperf3)

Install iperf3:

sudo apt install iperf3 -y

On the server (listening):

iperf3 -s

On the client (another VPS or local machine):

iperf3 -c YOUR_SERVER_IP

Method 3: Test Upload Speed with iperf3 (Reverse Mode)

iperf3 -c YOUR_SERVER_IP -R

Method 4: Test with Parallel Connections (10 streams)

iperf3 -c YOUR_SERVER_IP -P 10

Method 5: Test for 60 Seconds

iperf3 -c YOUR_SERVER_IP -t 60

Using Public iperf Servers

Example with public server:

iperf3 -c iperf.he.net

Or:

iperf3 -c speedtest.tele2.net -p 5201

Test UDP Performance (for streaming applications)

iperf3 -c YOUR_SERVER_IP -u -b 100M

Check Network Latency

ping -c 10 google.com

mtr -r google.com

Interpret Results

• Gigabit VPS – Should see 800-950 Mbps
• 10Gbps VPS – 3-9 Gbps depending on CPU
• Good for web hosting – at least 100 Mbps