nodejs 计算内存使用率

//计算内存使用率
function calcMem(){
let mem_total = os.totalmem(),
mem_free = os.freemem(),
mem_used = mem_total - mem_free,
mem_ratio = 0;
mem_total = (mem_total / (1024 * 1024 * 1024)).toFixed(1);
mem_used = (mem_used / (1024 * 1024 * 1024)).toFixed(1);
mem_ratio = parseInt(mem_used / mem_total * 100);
return {
total: mem_total,
used: mem_used,
ratio: mem_ratio
}
}

测试worker

'use strict';
const fork = require('child_process').fork,
cpus = require('os').cpus();
//保存被子进程实例数组
var workers = {};
//这里的被子进程理论上可以无限多
var appsPath = ['./os.js','./os.js','./os.js'];
var createWorker = function(appPath){
//保存fork返回的进程实例
var worker = fork(appPath);
//监听子进程exit事件
worker.on('exit',function(){
console.log('worker: ' + worker.pid + ' exited');
delete workers[worker.pid];
createWorker(appPath);
});
workers[worker.pid] = worker;
console.log('Create worker: ' + worker.pid);
}
//启动所有子进程
for (var i = appsPath.length - 1; i >= 0; i--) {
createWorker(appsPath[i]);
};
//父进程退出时杀死所有子进程
process.on('exit',function(){
for(var pid in workers){
workers[pid].kill();
}
})

转载于:https://www.cnblogs.com/zh33gl/p/4886746.html