libuv VS libev

Compare libuv vs libev and see what are their differences.

libev

Full-featured high-performance event loop loosely modelled after libevent (by enki)
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libuv libev
75 4
23,065 1,540
1.3% -
9.1 0.0
7 days ago over 3 years ago
C C
MIT License BSD-2-Clause
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

libuv

Posts with mentions or reviews of libuv. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-01-11.
  • Epoll: The API that powers the modern internet (2022)
    7 projects | news.ycombinator.com | 11 Jan 2024
  • APIs in Go with Huma 2.0
    6 projects | dev.to | 6 Dec 2023
    I wound up on a different team with pre-existing Python code so temporarily shelved my use of Go for a bit, and we used Sanic (an async Python framework built on top of the excellent uvloop & libuv that also powers Node.js) to build some APIs for live channel management & operations. We hand-wrote our OpenAPI and used it to generate documentation and a CLI, which was an improvement over what was there (or not) before. Other teams used the OpenAPI document to generate SDKs to interact with our service.
  • Python Is Easy. Go Is Simple. Simple = Easy
    5 projects | news.ycombinator.com | 27 Nov 2023
  • Notes: Advanced Node.js Concepts by Stephen Grider
    5 projects | dev.to | 19 Aug 2023
    In the source code of the Node.js opensource project, lib folder contains JavaScript code, mostly wrappers over C++ and function definitions. On the contrary, src folder contains C++ implementations of the functions, which pulls dependencies from the V8 project, the libuv project, the zlib project, the llhttp project, and many more - which are all placed at the deps folder.
  • A Magia do Event Loop
    3 projects | dev.to | 1 Aug 2023
  • What is Node.js?: A Complete Guide
    2 projects | dev.to | 28 Jun 2023
    Node.js is written in C, C++, and JavaScript. The core components of Node.js - the V8 engine and the libuv library - are written in C++ and C, respectively, since these languages provide low-level access to system resources, making them well-suited for building high-performance and efficient applications. JavaScript is mainly used to write the application logic.
  • Using Parallel Processing in Node.js and its Limitations
    4 projects | dev.to | 6 Jun 2023
    Well, the single-threaded nature ultimately leads to its biggest downfall. Node.js utilizes a synchronous event loop engineered using Libuv that takes in code from the call stack and executes it.
  • io_uring support for libuv – 8x increase in throughput
    3 projects | news.ycombinator.com | 28 May 2023
  • 7 Tips to Build Scalable Node.js Applications
    5 projects | dev.to | 16 May 2023
    Node.js executes JavaScript code in a single-threaded model. However, Node.js can function as a multithreaded framework by utilizing the libuv C library to create hidden threads (see the event loop) which handle I/O operations, and network requests asynchronously. But, CPU-intensive tasks such as image or video processing can block the event loop and prevent subsequent requests from executing, increasing the application's latency.
  • Use io_uring for network I/O
    11 projects | news.ycombinator.com | 12 Apr 2023
    Hat's off for posting this 2 hours after it dropped!

    I've been tracking the nest of issues with anticipation! This wasn't linked to https://github.com/libuv/libuv/pull/1947 when it posted, so I didn't see it. Very glad you linked it, thanks!

libev

Posts with mentions or reviews of libev. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-05-12.
  • Polyphony: Fine-Grained Concurrency for Ruby
    3 projects | news.ycombinator.com | 12 May 2023
    Thank you for this.

    I am interested in how concurrency can be represented elegantly and efficiently, so I am interested in how libraries can simplify async and make it easier to reason about and write

    The libev and ioring support is great for IO scalability (https://github.com/enki/libev not sure if this is the official repo)

    In Python I use the "select" module and use epoll on Linux.

    I am currently thinking of designing an API that allows the registration of epoll-like listeners to arbitrary objects, including business objects, so you can efficiently register a listener on multiple behaviours of multiple arbitrary objects.

    I wrote an async/await simulation in Java and my scheduler is really simple, it's just a for loop that checks to see if there are any tasks that can progress. I notice the switch_fiber in polyphony must do something similar. This is similar to a yield in a coroutine.

    My async/await simulation takes the following program:

      task1:
  • Ship it!
    2 projects | /r/badcode | 24 Mar 2022
  • C in Web Dev
    5 projects | /r/C_Programming | 4 Dec 2021
    Also, libev
  • Ideas, thoughts, and notes on an action based polymorphism pattern for C
    2 projects | /r/C_Programming | 3 Jun 2021
    It's done even now. See ev.h where they do this. Just that you disable GCC's aliasing warning. There's a reason why restrict and aliasing became important to deal with. It wasn't standards that killed it.

What are some alternatives?

When comparing libuv and libev you can also consider the following projects:

libevent - Event notification library

Boost.Asio - Asio C++ Library

tokio-uring - An io_uring backed runtime for Rust

uvw - Header-only, event based, tiny and easy to use libuv wrapper in modern C++ - now available as also shared/static library!

C++ Actor Framework - An Open Source Implementation of the Actor Model in C++

benchmarks - Some benchmarks of different languages

asyncio - asyncio is a c++20 library to write concurrent code using the async/await syntax.

librespot - Open Source Spotify client library

liburing

Dasynq - Thread-safe cross-platform event loop library in C++