go benchmark详细测试例子
https://zhuanlan.zhihu.com/p/426081521
https://blog.csdn.net/weixin_43513459/article/details/122417657
https://www.cnblogs.com/devhg/p/14144740.html
https://juejin.cn/post/6970615934255906830
https://segmentfault.com/a/1190000016354758