Golang中的pprof分析环境搭建【Windows环境】

Golang中的pprof分析环境搭建【Windows环境】

一、pprof简介

• pprof,是golang 自带性能剖析工具,可以帮助定位程序中可能存在的问题，是go服务程序异常时辅助排查问题的有效工具
• Graphviz是开源的图形可视化软件。图形可视化是一种将结构信息表示为抽象图形和网络图的方法。它在网络，生物信息学，软件工程，数据库和网页设计，机器学习以及其他技术领域的可视化界面中具有重要的应用。

二、依赖工具

• graphviz图形可视化工具：https://download.csdn.net/download/weixin_43563169/84397206
• go环境

三、服务集成【Gin框架】

package main

import (
	"github.com/gin-gonic/gin"
	"github.com/DeanThompson/ginpprof"
)

func main() {
	router := gin.Default()
	
	// automatically add routers for net/http/pprof
	// e.g. /debug/pprof, /debug/pprof/heap, etc.
	ginpprof.Wrap(router)
	// ginpprof also plays well with *gin.RouterGroup
	// group := router.Group("/debug/pprof")
	// ginpprof.WrapGroup(group)
}

• 如果需要自定义封装采集，可以参考net/http/pprof中的init使用

  // net/http/pprof 
  func init() {
     http.HandleFunc("/debug/pprof/", Index)
     http.HandleFunc("/debug/pprof/cmdline", Cmdline)
     http.HandleFunc("/debug/pprof/profile", Profile)
     http.HandleFunc("/debug/pprof/symbol", Symbol)
     http.HandleFunc("/debug/pprof/trace", Trace)
  }
  

• 封装一个采集器，参考：一文搞懂pprof - 墨天轮 (modb.pro)

  // 采集注册 将gin路由注册进来即可
  // Register the standard HandlerFuncs from the net/http/pprof package with
  // the provided gin.Engine. prefixOptions is a optional. If not prefixOptions,
  // the default path prefix is used, otherwise first prefixOptions will be path prefix.
  func Register(r *gin.Engine, prefixOptions ...string) {
     RouteRegister(&(r.RouterGroup), prefixOptions...)
  }
  
  // RouteRegister the standard HandlerFuncs from the net/http/pprof package with
  // the provided gin.GrouterGroup. prefixOptions is a optional. If not prefixOptions,
  // the default path prefix is used, otherwise first prefixOptions will be path prefix.
  func RouteRegister(rg *gin.RouterGroup, prefixOptions ...string) {
     prefix := getPrefix(prefixOptions...)
  
     prefixRouter := rg.Group(prefix)
     {
        prefixRouter.GET("/", pprofHandler(pprof.Index))
        prefixRouter.GET("/cmdline", pprofHandler(pprof.Cmdline))
        prefixRouter.GET("/profile", pprofHandler(pprof.Profile))
        prefixRouter.POST("/symbol", pprofHandler(pprof.Symbol))
        prefixRouter.GET("/symbol", pprofHandler(pprof.Symbol))
        prefixRouter.GET("/trace", pprofHandler(pprof.Trace))
        prefixRouter.GET("/allocs", pprofHandler(pprof.Handler("allocs").ServeHTTP))
        prefixRouter.GET("/block", pprofHandler(pprof.Handler("block").ServeHTTP))
        prefixRouter.GET("/goroutine", pprofHandler(pprof.Handler("goroutine").ServeHTTP))
        prefixRouter.GET("/heap", pprofHandler(pprof.Handler("heap").ServeHTTP))
        prefixRouter.GET("/mutex", pprofHandler(pprof.Handler("mutex").ServeHTTP))
        prefixRouter.GET("/threadcreate", pprofHandler(pprof.Handler("threadcreate").ServeHTTP))
     }
  }
  
  func pprofHandler(h http.HandlerFunc) gin.HandlerFunc {
  	handler := http.HandlerFunc(h)
  	return func(c *gin.Context) {
  		handler.ServeHTTP(c.Writer, c.Request)
  	}
  }
  

四、使用示例

• 新建一个gin服务

  r := gin.New()
  

• 注册采集器，明确服务端口

  registerPprof(r)
  r.GET(aliveURI, c.aliveHandle()) //示例，aliveURI和c.aliveHandle()换成各自的url和响应函数即可
  

• 打包部署【这里不写打包流程,，贴完整代码】

  • main.go

    package main
    
    import (
    	"github.com/gin-gonic/gin"
    	"github.com/DeanThompson/ginpprof"
    )
    
    func main() {
    	//gin 路由初始化
    	r := gin.New()
    	// 注册pprof
    	self_pprof.RegisterPprof(r)
    	//gin 路由初始化
    	apiG := r.Group("/api")
    	r.GET("/hello", restful.Hello)
    	//开启监听服务端口
        err := r.Run(":8089")
        if err != nil {
    	    return nil
        }
    }
    

  • restful.go

    package restful
    import "github.com/gin-gonic/gin
    
    type response struct {
    	Code int         `json:"code"`
    	Msg  string      `json:"msg"`
    	Data interface{} `json:"data,omitempty"`
    }
    
    // Hello 
    func Hello(c *gin.Context) {
    	c.JSON(http.StatusOK, response{
    		Code: 200,
    		Msg:  "success",
    		Data: "hello",
    	})
    	return
    }
    

  • self_pprof.go

    package self_pprof
    
    // copy from https://github.com/gin-contrib/pprof/blob/master/pprof.go
    
    import (
    	"net/http"
    	"net/http/pprof"
    
    	"github.com/gin-gonic/gin"
    )
    
    const (
    	// DefaultPrefix url prefix of pprof
    	DefaultPrefix = "/debug/pprof"
    )
    
    func getPrefix(prefixOptions ...string) string {
    	prefix := DefaultPrefix
    	if len(prefixOptions) > 0 {
    		prefix = prefixOptions[0]
    	}
    	return prefix
    }
    
    // RegisterPprof the standard HandlerFuncs from the net/http/pprof package with
    // the provided gin.Engine. prefixOptions is a optional. If not prefixOptions,
    // the default path prefix is used, otherwise first prefixOptions will be path prefix.
    func RegisterPprof(r *gin.Engine, prefixOptions ...string) {
    	RouteRegister(&(r.RouterGroup), prefixOptions...)
    }
    
    // RouteRegister the standard HandlerFuncs from the net/http/pprof package with
    // the provided gin.GrouterGroup. prefixOptions is a optional. If not prefixOptions,
    // the default path prefix is used, otherwise first prefixOptions will be path prefix.
    func RouteRegister(rg *gin.RouterGroup, prefixOptions ...string) {
    	prefix := getPrefix(prefixOptions...)
    
    	prefixRouter := rg.Group(prefix)
    	{
    		prefixRouter.GET("/", pprofHandler(pprof.Index))
    		prefixRouter.GET("/cmdline", pprofHandler(pprof.Cmdline))
    		prefixRouter.GET("/profile", pprofHandler(pprof.Profile))
    		prefixRouter.POST("/symbol", pprofHandler(pprof.Symbol))
    		prefixRouter.GET("/symbol", pprofHandler(pprof.Symbol))
    		prefixRouter.GET("/trace", pprofHandler(pprof.Trace))
    		prefixRouter.GET("/allocs", pprofHandler(pprof.Handler("allocs").ServeHTTP))
    		prefixRouter.GET("/block", pprofHandler(pprof.Handler("block").ServeHTTP))
    		prefixRouter.GET("/goroutine", pprofHandler(pprof.Handler("goroutine").ServeHTTP))
    		prefixRouter.GET("/heap", pprofHandler(pprof.Handler("heap").ServeHTTP))
    		prefixRouter.GET("/mutex", pprofHandler(pprof.Handler("mutex").ServeHTTP))
    		prefixRouter.GET("/threadcreate", pprofHandler(pprof.Handler("threadcreate").ServeHTTP))
    	}
    }
    
    func pprofHandler(h http.HandlerFunc) gin.HandlerFunc {
    	handler := http.HandlerFunc(h)
    	return func(c *gin.Context) {
    		handler.ServeHTTP(c.Writer, c.Request)
    	}
    }
    

五、测试

• 如果是本地，直接访问自己的服务端口，例如

  • /debug/pprof/
  • 效果：
    

• 如果是线上服务器

  本文采用rpm包部署，部署完成后，项目路径下executor.sock会记录服务端口，当然自己应该也知道
  如果部署在服务器上，没有GUI界面，可以将profile文件下载后，本地使用go tool pprof查看分析，具体使用如下
  

  • 1、登录linux服务器，执行profile文件下载

    //31301是本文服务的端口
    wget -O goroutine http://localhost:31301/debug/pprof/goroutine
    wget -O heap http://localhost:31301/debug/pprof/heap
    wget -O trace http://localhost:31301/debug/pprof/trace
    ...
    

  • 2、本地go tool分析

    go tool pprof -http=":8082" goroutine
    go tool trace -http=":8083" trace
    go tool pprof -http=":8081" heap
    ...
    

  • 3、本地浏览器访问