[node.js] cluster를 이용한 멀티코어(multi-core) 사용
셈플
var express = require("express" );
var http = require("http" );
var cluster = require("cluster" );
var os = require("os" );
if( cluster.isMaster){
var cpu = os.cpus().length;
for(var i=0; i<cpu; i++){
cluster.fork();
}
cluster.on("exit" , function(worker, code, signal){
//process가 종료 되었을경우 다시 시작
console.log("worker : exit #%s %s", worker.id, signal);
console.log("worker restarting ...");
cluster.fork();
});
cluster.on("online" , function(worker){
console.log("worker : online #%s, pid: %d", worker.id,
worker.process.pid);
});
cluster.on("listening", function(worker, address){
console.log("worker : listening %s", worker.id);
console.log(" address: %s, port: %d", address.address, address.port);
});
}else{
var app = express();
var server = http.createServer(app);
server.listen(8090, function(){
console.log("server listening on worker id : #"+cluster.worker.id);
});
}
실행결과
worker : online #1, pid: 32577
worker : online #2, pid: 32578
server listening on worker id : #1
worker : listening 1
address: 0.0.0.0, port: 8090
server listening on worker id : #2
worker : listening 2
address: 0.0.0.0, port: 8090
worker : online #2, pid: 32578
server listening on worker id : #1
worker : listening 1
address: 0.0.0.0, port: 8090
server listening on worker id : #2
worker : listening 2
address: 0.0.0.0, port: 8090
참고:
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