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Ultra fast implementation of asyncio event loop on top of libuv.

License: Apache License 2.0

Shell 1.01% Python 98.66% Makefile 0.21% C 0.12%

uvloop's Introduction

https://travis-ci.org/MagicStack/uvloop.svg?branch=master

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 performance.

Installation

uvloop requires Python 3.5 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())

Alternatively, you can create an instance of the loop manually, using:

loop = uvloop.new_event_loop()
asyncio.set_event_loop(loop)

Development of uvloop

To build uvloop, you'll need Cython and Python 3.5. The best way is to create a virtual env, so that you'll have cython and python commands pointing to the correct tools.

  1. git clone --recursive [email protected]:MagicStack/uvloop.git
  2. cd uvloop
  3. make
  4. make test

License

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

uvloop's People

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