update README

Author: netcan

.gitignore

@@ -5,3 +5,5 @@
 /*.py
 .cache
 compile_commands.json
+/*.p
+/*.data

README.md

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+<!--ts-->
+* [asyncio](#asyncio)
+   * [Build &amp; Run](#build--run)
+   * [Hello world](#hello-world)
+   * [Dump callstack](#dump-callstack)
+   * [TCP Echo](#tcp-echo)
+      * [Client](#client)
+      * [Server](#server)
+      * [Benchmark](#benchmark)
+   * [Gather](#gather)
+   * [Tested Compiler](#tested-compiler)
+   * [TODO](#todo)
+   * [Reference](#reference)
+
+<!-- Added by: netcan, at: Fri Dec  3 08:06:48 PM HKT 2021 -->
+
+<!--te-->
+
 # asyncio
 Asyncio is a C++20 coroutine library to write concurrent code using the await syntax, and imitate python asyncio library.
 
@@ -131,6 +149,21 @@ Send: 'Hello World!'
 Close the connection
 ```
 
+### Benchmark
+Using the Apache Benchmarking tool, 10000000 requests that each size is 106 byte, 1000 concurrency, enable keepalive, the QPS/RPS result below:
+
+| framework      |  RPS [#/sec] (mean) |
+|----------------|--------------------:|
+| python asyncio |            47393.59 |
+| this project   |       **164457.63** |
+| epoll          |           149478.83 |
+| libevent       |           136996.46 |
+| libuv          |           159937.73 |
+
+
+More detail see: [benchmark.md](docs/benchmark.md)
+
+
 ## Gather
 ```cpp
 auto factorial(std::string_view name, int number) -> Task<int> {

docs/benchmark.md

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 # AsyncIO Eventloop benchmark
 - Date: 2021-12-3
+- CommitId: bc031cc835d8da4549aebc752c3a3bda5f103012
 - Test command: `ab -n 1000000 -c 1000 -k http://127.0.0.1:8888/`
 - OS: Linux debian 5.15.0-1-amd64 #1 SMP Debian 5.15.3-1 (2021-11-18) x86_64 GNU/Linux
 - CPU: AMD Ryzen 5 2600X Six-Core Processor