Node.js process.memoryUsage() 方法
process.memoryUsage()方法是 process 模块的内置方法,它提供有关 Node.js 程序的当前进程或运行时的信息。内存使用方法返回一个对象,以字节为单位描述 Node.js 进程的内存使用情况。
句法:
process.memoryUsage()
参数:此方法不接受任何参数:
返回值:此方法返回一个带有内存使用说明的对象。
下面的例子说明了在 Node.js 中process.memoryUsage()方法的使用。
示例 1:
index.js
// Requiring module
var process = require('process')
// Prints the output as an object
console.log(process.memoryUsage())
index.js
// Requiring module
var process = require('process')
// An example displaying the respective memory
// usages in megabytes(MB)
for (const [key,value] of Object.entries(process.memoryUsage())){
console.log(`Memory usage by ${key}, ${value/1000000}MB `)
}
使用以下命令运行index.js文件:
node index.js
输出:
{
rss: 23851008,
heapTotal: 4907008,
heapUsed: 2905912,
external: 951886,
arrayBuffers: 17574
}
示例 2:
index.js
// Requiring module
var process = require('process')
// An example displaying the respective memory
// usages in megabytes(MB)
for (const [key,value] of Object.entries(process.memoryUsage())){
console.log(`Memory usage by ${key}, ${value/1000000}MB `)
}
使用以下命令运行index.js文件:
node index.js
输出:
Memory usage by rss, 23.87968MB
Memory usage by heapTotal, 4.907008MB
Memory usage by heapUsed, 2.907088MB
Memory usage by external, 0.951886MB
Memory usage by arrayBuffers, 0.017574MB
参考: https://nodejs.org/api/process.html#process_process_memoryusage