Fast implementation of asyncio event loop on top of libuv

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  • License: Apache Software License, MIT License (MIT)
  • Author: Yury Selivanov
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Project description

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uvloop is a fast, drop-in replacement of the built-in asyncio event loop. uvloop is implemented in Cython and uses libuv under the hood.

The project documentation can be found here. Please also check out the wiki.

Performance

uvloop makes asyncio 2-4x faster.

performance.png

The above chart shows the performance of an echo server with different message sizes. The sockets benchmark uses loop.sock_recv() and loop.sock_sendall() methods; the streams benchmark uses asyncio high-level streams, created by the asyncio.start_server() function; and the protocol benchmark uses loop.create_server() with a simple echo protocol. Read more about uvloop in a blog post about it.

Installation

uvloop requires Python 3.5 or greater and is available on PyPI. Use pip to install it:

$ pip install uvloop

Using uvloop

To make asyncio use uvloop, you can install the uvloop event loop policy:

import asyncio
import uvloop

asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())

or, starting with uvloop 0.12:

import uvloop

uvloop.install()

Building From Source

To build uvloop, you’ll need Python 3.5 or greater:

  1. Clone the repository:

    $ git clone --recursive git@github.com:MagicStack/uvloop.git
$ cd uvloop

  2. Create a virtual environment and activate it:

    $ python3.7 -m venv uvloop-dev
$ source uvloop-dev/bin/activate

  3. Install development dependencies:

    $ pip install -r requirements.dev.txt

  4. Build and run tests:

    $ make
$ make test

License

uvloop is dual-licensed under MIT and Apache 2.0 licenses.

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  • License: Apache Software License, MIT License (MIT)
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0.21.0

0.21.0b1 pre-release

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0.14.0rc1 pre-release

0.13.0

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