Jul 20, 2023

Simple and fast HTTP performance testing tool

apib is a tool that makes it easy to run performance tests of HTTP API servers. It has most of the features of Apache Bench ab, but is also intended as a more modern replacement. In particular, it offers

  • Proper HTTP 1.1 support including keep-alives and chunked encoding
  • Ability to spawn multiple I/O threads to take advantage of multiple CPU cores
  • Non-blocking I/O for high concurrency
  • Support for POST and PUT of large objects
  • Support for OAuth 1.0 signatures
  • Ability to output results to a file so they may be automated
  • Remote CPU monitoring
  • Simple command-line interface

This article covers one of the many useful software available in the FreeBSD Ports Collection specifically under the ‘benchmarks’ category, the apib port. As we navigate through the article, we’ll introduce the powerful functionalities of the apib port, discuss its potential applications, and provide a comprehensive guide on how to deploy and efficiently use it.

Introduction to apib

ApibAPI Benchmarker and testing tool is a high-performance HTTP load generator and benchmarking kit. It allows you to create HTTP/HTTPS requests and measurements for these requests, providing insights into how well your server can handle heavy traffic loads with multiple operations. Ideal for stress testing, apib translates to being an essential tool in the benchmarking arsenal of any FreeBSD user that aims to ensure their applications offer robust performance even under the most demanding conditions.

Benefits of Using apib

The real advantage apib brings to the table is its ability to emulate heavy traffic, thereby enabling you to gauge the performance of your server or API more accurately. By using apib, you have the power to test server performance under intense workloads, helping identify weaknesses, which could include throttling issues, memory leaks, slow queries, and more.

Here are some key benefits

  • In-depth Performance Insights With its support for high load HTTP requests, apib provides detailed performance metrics, such as connection times, request rates, and response times that can help users diagnose server-response behavior under various conditions.
  • Easy Load Testing apib allows users to simulate a high number of concurrent connections to a server. This helps test and establish the load-bearing capacity of a server.
  • Scriptable API Testing With its scriptability feature, automated API testing becomes more convenient. apib is also capable of testing REST APIs, making it a versatile tool for API developers.
  • SSL Support apib has SSL support which facilitates testing of secure HTTP servers.

Installing apib in FreeBSD

FreeBSD Ports Collection makes it incredibly easy to install and manage software. You can install apib with a straightforward set of commands. Please find the set of commands below for accumulating apib from ports

cd /usr/ports/benchmarks/apib/
make install clean

For binary package installation, execute the following command

pkg install apib

Using apib

Before we delve deeper into its usage, it’s important to acquaint yourself with its basic syntax.


OPTIONS can be any of the command-line options detailed in the apib man page, and URL is the URL to be tested.

One of the simplest ways to use apib is to send a number of requests to a given URL. The following command sends 1000 requests to example.com

apib -c 10 -d 100 example.com

The -c option sets the number of concurrent connections, while -d sets the duration of the test in seconds.

Apib can also be used to test the behavior of your server or application when facing maximum traffic load or thousands of simulated users. For instance, the following command runs a test with 1000 connections for a duration of 60 seconds

apib -c 1000 -d 60 example.com

For more detailed usage instructions, you can always refer to the apib manual by typing man apib in your terminal. It provides a thorough list of all the command-line options and features the tool offers.

Comparing with other Ports

Just like apib helps you benchmark website performance, other tools in the Ports Collection aid to a variety of complexities. For instance, the [nmap]https//freebsdsoftware.org/security/nmap.html port is a fantastic tool for network discovery and security auditing.

Similarly, ipfw IPFirewall and pf Packet Filter offer robust firewall capabilities, and ports like htop and sysstat provide detailed system statistics. It’s worth exploring the vast FreeBSD Ports Collection to find tools that best suit your specific needs and preferences.


In conclusion, apib proves to be a robust and versatile tool under FreeBSD’s Port Collection. With its ability to perform high-stress testing and provide near-accurate benchmark results, it can serve as a guiding star for those working with servers and seeking to optimize their load-bearing capacities and overall performance. The FreeBSD Ports Collection, with its vast library of tools and programs, is indeed a treasure-trove waiting to be explored by users.

Checkout these related ports:
  • Wrk - Modern HTTP benchmarking tool
  • Webbench - Simple forking web benchmark
  • Vkpeak - Profile Vulkan devices to find their peak capacities
  • Vkoverhead - Evaluate CPU overhead of Vulkan drivers
  • Vkmark - Vulkan benchmark
  • Vegeta - HTTP load testing tool and library
  • Uperf - Network performance tool to model and replay of networking patterns
  • Unixbench - BYTE magazine's Public Domain benchmark for UNIX
  • Uica - Code Analyzer from the uops.info project
  • Ubench - Unix Benchmark Utility for CPU(s) and memory
  • Typometer - Text/code editor typing latency analyzer
  • Ttcp - Benchmarking tool for analysing TCP and UDP performance
  • Tsung - Multi-protocol distributed load testing tool
  • Thrulay - Network capacity tester
  • Tcpblast - Measures the throughput of a TCP connection