boost::asio 线程池与 io_service_per_cpu 设计

2021-12-24 00:00:00 multithreading threadpool c++ boost boost-asio

目前我不确定，我尝试制作高性能服务器，我有一个 6Core CPU，所以如果我使用io_service_per_cpu"设计，我有 6 个 io_service.

Currently I′m not sure, I try to make a high-performance server, I got a 6Core CPU, so if I would use the "io_service_per_cpu" design, I have 6 io_service′s.

我已经听说线程池设计不是最好的，但我不确定.

I already heard that the threadpool design isn′t the best one, but I′m not sure about that.

你有什么知识?有人已经对每个人进行了压力测试，还是其他什么?

What knowledge do you have? Someone already made a Stress test with each, or something else?

推荐答案

根据我的经验，按照以下顺序进行异步应用程序设计要容易得多:

In my experience it is vastly easier to approach asynchronous application design with the following order:

  1. 单线程和一个io_service
  2. 多个线程，每个线程从单个 io_service 调用 io_service::run().使用 strands 作为处理程序需要访问共享数据结构.
  3. io_service 每个 cpu
  1. single thread and a single io_service
  2. multiple threads, each invoking io_service::run() from a single io_service. Use strands for handlers that require access to shared data structures.
  3. io_service per cpu

在对您的应用程序进行概要分析之后，应该考虑在这些设计中的每一个之间进行更改.请注意，仅 HTTP Server 2 示例展示了如何使用每个 CPU 的 io_service，它没有告诉你何时或为什么使用这样的设计.

The motivation for changing between each of these designs should be done after profiling your application. Note that the HTTP Server 2 example only shows how to use an io_service per CPU, it does not show you when or why to use such a design.

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