first commit

历届学生/王凯/11-16/cluster.js

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+var cluster = require('cluster');
+var http = require('http');
+var numCPUs = require('os').cpus().length;
+// sudo siege -c 50 http://localhost:3000
+if (cluster.isMaster) {
+    console.log('[master] ' + "start master...");
+
+    for (var i = 0; i < numCPUs; i++) {
+         cluster.fork();
+    }
+
+    cluster.on('listening', function (worker, address) {
+        console.log('[master] ' + 'listening: worker' + worker.id + ',pid:' + worker.process.pid + ', Address:' + address.address + ":" + address.port);
+    });
+
+} else if (cluster.isWorker) {
+    console.log('[worker] ' + "start worker ..." + cluster.worker.id);
+    http.createServer(function (req, res) {
+        console.log('worker'+cluster.worker.id);
+        res.end('worker'+cluster.worker.id+', PID: '+process.pid);
+    }).listen(3000);
+}