Hi,
Just tried to benchmark a simple dns lookup server with NodeJS and the
results turned me down.
I've heard NodeJS is good when dealing with heavy IO bound application, but
my server only serves 20 request/second.
var express = require('express');var dns = require('dns');var app =
express();var PORT = process.env.PORT || 3000;
app.get('/', function(req, res) {
var endpoint = "cloudflare.com";
dns.resolve(endpoint, function(err, ips) {
if (err) {
res.send(JSON.stringify(err));
} else {
res.send(JSON.stringify(ips));
}
})});
app.listen(PORT);
Benchmark result: (with NODE_ENV set to production, but that doesn't
improve anything)
ab -n 1000 -c 300 http://slave:4000/
This is ApacheBench, Version 2.3 <$Revision: 1528965 $>Copyright 1996 Adam
Twiss, Zeus Technology Ltd, http://www.zeustech.net/Licensed to The Apache
Software Foundation, http://www.apache.org/
Benchmarking slave (be patient)Completed 100 requestsCompleted 200
requests^[[C^[[ACompleted 300 requestsCompleted 400 requestsCompleted 500
requestsCompleted 600 requestsCompleted 700 requestsCompleted 800
requestsCompleted 900 requestsCompleted 1000 requestsFinished 1000 requests
Server Software: Server Hostname: slaveServer Port:
4000
Document Path: /Document Length: 35 bytes
Concurrency Level: 300Time taken for tests: 61.889 secondsComplete
requests: 1000Failed requests: 0Total transferred: 230000 bytes
HTML transferred: 35000 bytesRequests per second: 16.16 [#/sec]
(mean)Time per request: 18566.552 [ms] (mean)Time per request:
61.889 [ms] (mean, across all concurrent requests)Transfer rate: 3.63
[Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median maxConnect: 121 176 109.1 148
1226Processing: 124 12160 14851.2 5131 61682Waiting: 123 12160
14851.3 5131 61682Total: 247 12337 14852.1 5309 61886
Percentage of the requests served within a certain time (ms)
50% 5309
66% 15018
75% 18214
80% 21360
90% 38872
95% 44911
98% 54477
99% 56875
100% 61886 (longest request)
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