axnet

• A C++ non-blocking network library and it's is just my personal practice work
• Reactor model, i.e., one main reactor for accepting new connection and several sub-reactors(configurable) for handling accepted connections, plus thread pool support for CPU-consuming tasks (Use level-triggered epoll. Use eventfd for asynchronous wakeup of threads)
• Implement both TcpServer and TcpClient (Use std::enable_shared_from_this for life cycle management)
• Implement Thread pool
• Implement a simple and easy-to-use buffer class (Its interface is not perfect yet)
• Use boost.log for logging (It's too slow. At first I chose it just for trying. Now it need to be replaced by another logging library or manually implemented)

Performance Tests

Tests show that axnet and muduo performs almost the same. Here is the detailed test information:

Test environment:

• VMware Workstation 12 Pro
• Intel(R) Core(TM) i3-6100
• 4G RAM + 4G swap
• Linux ubuntu 4.13.0-39-generic #44~16.04.1-Ubuntu SMP

pingpong test:

With 1 server thread(only 1 main reactor), 1 client thread, message block size of 4096 bytes, test results of different concurrent connection number:

Concurrent connections: 1

axnet - 52.1479 MiB/s
muduo - 53.3362630208 MiB/s

Concurrent connections: 10

axnet - 668.284 MiB/s
muduo - 727.059960938 MiB/s

Concurrent connections: 100

axnet - 626.058 MiB/s
muduo - 644.079492188 MiB/s

With 3 server threads(1 main reactor + 2 sub-reactors), 2 clients threads, message block size of 4096 bytes, test results of different concurrent connection number:

Concurrent connections: 10

axnet - 882.598 MiB/s
muduo - 953.319466146 MiB/s

Concurrent connections: 100

axnet - 860.353 MiB/s
muduo - 884.478059896 MiB/s

Fake http test (I don't want to write another http parser so I use a busy loop to pretend the http request parsing and return a fixed http response):

With 1 server thread(only one main loop), test results of different concurrent connection number:

concurrent connections: 100

axnet - 8837 req/s
muduo - 8855 req/s

concurrent connections: 1000

axnet - 5907 req/s
muduo - 6230 req/s

concurrent connections: 5000

axnet - 4232 req/s
muduo - 4174 req/s

With 4 server thread(one main reactor + 4 sub-reactors), test results of different concurrent connection number:

concurrent connections: 100

axnet - 14777 req/s
muduo - 14733 req/s

concurrent connections: 1000

axnet - 27512 req/s
muduo - 28028 req/s

concurrent connections: 5000

axnet - 23119 req/s
muduo - 22317 req/s

TODO

• Replace boost.log with another logging library or implement a new one
• Complete the interface of the Buffer class
• Timer