search
HomeBackend DevelopmentGolangTraps and avoidance of golang function debugging and analysis tools

golang 函数调试与分析工具的陷阱与回避

Pitfalls and Avoidances of Go Function Debugging and Analysis Tools

There are many useful tools when debugging and analyzing Go applications Available, for example: pprof, gotrace, and go tool trace. However, there are pitfalls in the use of these tools that need to be recognized and avoided to obtain the most accurate and useful results.

pprof trap

  • #Improper sampling rate setting: A sampling rate that is too high may cause application performance to degrade, while a sampling rate that is too low may cause The sampling rate may miss important information.
  • Function inlining is not disabled: Function inlining can reduce sampling accuracy, resulting in a lack of visibility into internal function calls. Inlining can be disabled using the -noinlining flag.
  • Insufficient sampling time: Give pprof Sufficient time to collect enough data is critical for accurate analysis.

Actual case:

import (
    "log"
    "net/http"
    "runtime/pprof"
)

func main() {
    // 启用 pprof,端口 6060
    go func() {
        log.Println(http.ListenAndServe("localhost:6060", nil))
    }()

    // 模拟要分析的应用程序
    for i := 0; i < 1000000; i++ {
        // 这里放要分析的代码
    }
}

gotrace trap

  • Improper activation method:SetTraceProfile should not be called in the application's main goroutine as it can deadlock the application.
  • File size limit: SetTraceProfile The generated file may be large, so you need to ensure that the file system has enough space.
  • Complex function calls: gotrace Performance on complex or recursive function calls may be poor, resulting in deadlocks or hangs.

Practical case:

import (
    "fmt"
    "runtime"
    "time"
)

func traceFunc() {
    trace := runtime.GoroutineProfile(runtime.StackRecord{})
    if trace != nil {
        // 这里可以分析记录的信息
    }
}

func main() {
    go func() {
        for {
            traceFunc()
            time.Sleep(time.Second)
        }
    }()

    // 模拟要分析的应用程序
    for i := 0; i < 1000000; i++ {
        // 这里放要分析的代码
    }
}

go tool trace trap

  • Complex settings : Using go tool trace requires configuring the trace server, which may be cumbersome.
  • Performance overhead: go tool trace will bring certain performance overhead to the application.
  • Poor event selection: When selecting events to track, you need to weigh the performance cost against the value of the information collected.

Practical case:

# 启动 trace 服务器
go tool trace -start -server=0.0.0.0:6060

# 运行要分析的应用程序
go run main.go

# 停止跟踪并生成报告
go tool trace -stop

The above is the detailed content of Traps and avoidance of golang function debugging and analysis tools. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Interfaces and Polymorphism in Go: Achieving Code ReusabilityInterfaces and Polymorphism in Go: Achieving Code ReusabilityApr 29, 2025 am 12:31 AM

InterfacesandpolymorphisminGoenhancecodereusabilityandmaintainability.1)Defineinterfacesattherightabstractionlevel.2)Useinterfacesfordependencyinjection.3)Profilecodetomanageperformanceimpacts.

How do you iterate through a map in Go?How do you iterate through a map in Go?Apr 28, 2025 pm 05:15 PM

Article discusses iterating through maps in Go, focusing on safe practices, modifying entries, and performance considerations for large maps.Main issue: Ensuring safe and efficient map iteration in Go, especially in concurrent environments and with l

How do you create a map in Go?How do you create a map in Go?Apr 28, 2025 pm 05:14 PM

The article discusses creating and manipulating maps in Go, including initialization methods and adding/updating elements.

What is the difference between an array and a slice in Go?What is the difference between an array and a slice in Go?Apr 28, 2025 pm 05:13 PM

The article discusses differences between arrays and slices in Go, focusing on size, memory allocation, function passing, and usage scenarios. Arrays are fixed-size, stack-allocated, while slices are dynamic, often heap-allocated, and more flexible.

How do you create a slice in Go?How do you create a slice in Go?Apr 28, 2025 pm 05:12 PM

The article discusses creating and initializing slices in Go, including using literals, the make function, and slicing existing arrays or slices. It also covers slice syntax and determining slice length and capacity.

How do you create an array in Go?How do you create an array in Go?Apr 28, 2025 pm 05:11 PM

The article explains how to create and initialize arrays in Go, discusses the differences between arrays and slices, and addresses the maximum size limit for arrays. Arrays vs. slices: fixed vs. dynamic, value vs. reference types.

What is the syntax for creating a struct in Go?What is the syntax for creating a struct in Go?Apr 28, 2025 pm 05:10 PM

Article discusses syntax and initialization of structs in Go, including field naming rules and struct embedding. Main issue: how to effectively use structs in Go programming.(Characters: 159)

How do you create a pointer in Go?How do you create a pointer in Go?Apr 28, 2025 pm 05:09 PM

The article explains creating and using pointers in Go, discussing benefits like efficient memory use and safe management practices. Main issue: safe pointer use.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.