Shulou(Shulou.com)06/03 Report--

Draw the key points

This article will introduce the detection practice of PouchContainer in goroutine leak from what is goroutine leak, how to detect and the commonly used analysis tools.

0. Introduction

PouchContainer is an open source container runtime product of Alibaba Group. It has the characteristics of strong isolation and portability. It can be used to help enterprises quickly realize the containment of inventory business and improve the utilization of internal physical resources.

PouchContainer is also a golang project. In this project, goroutine is widely used to implement container management, image management, log management and other modules. Goroutine is a user-mode "thread" supported by golang at the language level. This native concurrency support feature can help developers quickly build highly concurrent services.

Although goroutine is easy to complete concurrent or parallel operations, if there is a state in which the channel receiver is blocked for a long time but cannot wake up, then goroutine leak will occur. Goroutine leak is as scary as memory leaks, and such goroutine can constantly gobble up resources, causing the system to run slowly or even crash. In order for the system to run healthily, developers are needed to ensure that the goroutine will not be leaked. Next, this paper will introduce the detection practice of PouchContainer in goroutine leak from what goroutine leak is, how to detect and the commonly used analysis tools.

1. Goroutine Leak

In the world of golang, there are many marmots you can control. They can either deal with a big wave of the same problem at the same time, or they can work together on the same thing. As long as you direct it properly, the problem can be solved quickly. Yes, a marmot is what we often call a goroutine. You only need to go easily, and you have a marmot, and it will perform the tasks you specify:

Func main () {

WaitCh: = make (chan struct {})

Go func () {

Fmt.Println ("Hi, Pouch. I'm new gopher!")

WaitCh

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.