News for hackers. Stuff that matters.

A comment on Async Python is not faster. Parent comment

Re:Async Python is not faster by DougBTX on Friday June 12, 2020 @03:23PM (#23502682)
As far as I can tell, the main cost of threads is 2-4MB of memory usage for stack space, so async allows saving memory by allowing one thread to process more than one task. A big deal if you have a server with 1GB of memory and want to handle 100,000 simultaneous connections, like Erlang was designed for. But if the server has enough memory for as many threads that are needed to cover the number of simultaneous tasks, is there still a benefit?
[ Parent | on HN ]
Re:Async Python is not faster by BiteCode_dev on Friday June 12, 2020 @03:41PM (#23502915)
Now the $1000 question would be, if you pay for the context switching of BOTH threads and asyncio, having 5 processes, which each 20 threads, within each an event loop, what happens?

Is the price of the context switching too high, or are you compensating the weakness of each system, by handling I/O concurrently in async, but smoothing the blocking code outside of the await thanks to threads?

Making a _clean_ benchmark for would it be really hard, though.

[ Parent | on HN ]