How to create 50000 tcp connection in single linux machine?

@georgiana.senger 

Creating such a large number of TCP connections on a single Linux machine can be challenging due to system resource limitations. Here's a general approach to achieve it:

1. Increase system limits: Open the /etc/security/limits.conf file and add the following lines: * soft nofile 100000 * hard nofile 100000 Modify the /etc/sysctl.conf file and add the following lines: net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 net.ipv4.ip_local_port_range = 1024 65000 Apply the changes using the command sudo sysctl -p.
2. Disable reverse DNS lookup: Open the /etc/ssh/sshd_config file and add the following line: UseDNS no Restart the SSH service with the command sudo service sshd restart.
3. Modify TCP configuration: Open the /etc/sysctl.conf file and add the following lines: net.ipv4.tcp_max_syn_backlog = 16384 net.core.somaxconn = 16384 Apply the changes using the command sudo sysctl -p.
4. Writing a script: Use a programming language (e.g., Python, C) to write a script that establishes TCP connections. Use a loop to create and maintain connections. For example, in Python: import socket for _ in range(50000): sock = socket.socket() try: sock.connect(('127.0.0.1',
5. Run the script: Execute the script with appropriate configurations. Monitor system resource usage and adjust the script if necessary.

Note: Creating and maintaining a large number of TCP connections may have implications on system performance and resource availability. Ensure that your system is capable of handling such a high load.