uvloop blog and HTTP parser

[Samuel Colvin]

I'm sure lots of people have seen:

http://magic.io/blog/uvloop-make-python-networking-great-again/

on both the python-tulip group and hackernews.

It's very interesting and very positive about asyncio, however it does include:

the performance bottleneck in aiohttp turned out to be its HTTP parser, which is so slow, that it matters very little how fast the underlying I/O library is. 

They then go on to say they built a very simple web server httptools using the nodejs C http-parser.

Would there be any possibility of using the faster http parser in aiohttp?

Perhaps this would be best achieved by modifying aiohttp to allow substitutable http parsers then creating aiohttp-http-parser as a separate package? 

[Сергей Тихонов]

I've added httptools parser into test aiohttp app, just for fun. I haven't got any performance improvements, since httptools example replaces not only the parser itself, but also all other aiohttp components: url router, middleware support, even response generation.

Sergey Tikhonov.

четверг, 5 мая 2016 г., 16:12:03 UTC+3 пользователь Samuel Colvin написал:

[Samuel Colvin]

Great to see aiohttp http parsing is already composable.

Do you think there is a possibility of improving the performance of aiohttp to approach node or go as per the results in the blog below?

Perhaps the asyncio streams issue discussed on the python-tulip group accounts for some of the performance gap?

Samuel

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Samuel Colvin
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[Сергей Тихонов]

I think if you add routing, middleware and http-related RFCs handling to node server, you'll decrease nodejs performance to aiohttp level.

But if you don't need aiohttp server functionality - you can use vmbench as a starting point for a highly specialized single-purpose http server.

Sergey.

четверг, 5 мая 2016 г., 16:59:29 UTC+3 пользователь Samuel Colvin написал: