Debugging and performance analysis in Golang is very important, and finding problems and fixing them in time during the development process can greatly improve code quality and efficiency. Introduce two commonly used debugging tools, dlv and pprof, and how to use them for code debugging and performance analysis.
One, dlv debugging tool
1. Install
It needs to be installed before using dlv, which can be installed by the following command:
go get -u github.com/go-delve/delve/cmd/dlv
2. use
Before we can start debugging, we need to add breakpoints. We can use breakcommands to add breakpoints, for example:
break main.go:32
This will add a breakpoint at line 32 of the main.go file. We can then use continuethe command to run the program until a breakpoint is hit. Once the program stops at the breakpoint, we can use printcommands to view the value of the variable, for example:
print var_name
We can also use other commands to control the execution of the program, for example stepcommands can jump inside functions and nextcommands can skip function calls.
Two, pprof performance analysis
1. Install
pprof itself is part of the Golang standard library, no additional installation is required.
2. use
To use pprof, we need to add profiling support to our application. Just import the package in our code net/http/pprof. For example:
import _ "net/http/pprof"
http://localhost:6060/debug/pprof/After launching the application, we can open pprof's web interface by visiting it in a browser .
In the web interface, we can see various performance statistics, such as CPU and memory usage, stack trace information, etc. We can use this information to find performance issues in the application and make optimizations.
Summarize:
Introduces two commonly used debugging tools in Golang, dlv and pprof, and explains how to use them for code debugging and performance analysis. In actual development, we can use these tools in combination to quickly locate and fix code problems, and improve code quality and efficiency.
Author: Zhu Lei