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For more info check this issue.

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Some use examples:

$ sudo latency_histogram.py -i eth0 -t src "dst port 26000"
$ sudo latency_histogram.py -i eth0 -t dst "src port 26000"
$ sudo latency_histogram.py -t dst --iface eth0 "src host 168.119.137.110"
$ sudo latency_histogram.py -t src --iface eth0 "dst host 168.119.137.110"

Example output:

bacher09

Function shows calling new listns syscall (since 6.19 kernel) from Python.

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#!/usr/bin/env python3
import argparse
import csv
import os.path
import pathlib

import maxminddb
import netaddr

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import socket

STATUS_RESPONSE_HEADER = b'\xff\xff\xff\xffstatusResponse\n'

def parse_server_vars(server_vars):
    if not server_vars.startswith(b'\\'):
        raise ValueError('Invalid server vars')

    values = server_vars.split(b'\\')[1:]
    return dict(zip(values[::2], values[1::2]))

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/usr/local/bin/teleport         --      gen_context(system_u:object_r:teleport_exec_t,s0)
/var/lib/teleport(/.*)?         gen_context(system_u:object_r:teleport_var_lib_t,s0)
/var/run/teleport.pid           --      gen_context(system_u:object_r:teleport_var_run_t,s0)
/run/teleport.pid               --      gen_context(system_u:object_r:teleport_var_run_t,s0)

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package main

import (
        "fmt"
        "io"
        "net"
        "net/http"
        "syscall"
)

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cmake_minimum_required(VERSION 3.6)
project(CORE)

find_program(BASH bash HINTS /bin)

find_package(ZLIB)

if(NOT DEFINED BPFTOOL_PATH)
        set(BPFTOOL_PATH "${CMAKE_CURRENT_SOURCE_DIR}/bin/bpftool")
endif()

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-module(echo_server).
-export([start/0, loop/2]).
-define(LISTEN_PORT, 1234).

start() ->
    listen().

listen() ->
    {ok, LSock} = gen_tcp:listen(?LISTEN_PORT, [binary, {active, false},
                                                {reuseaddr, true}]),

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$ ./test
1.0
0.1000
0.112
0.112
2652 49490604