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benchmark: Backport improvements made in master

Ported to v0.6 for easier comparison in the 0.8.0 blog post.
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1 parent dd1c3d7 commit 8a946c2ee7aba1722aab9773bbf8534d063870e4 @isaacs isaacs committed Jun 23, 2012
Showing with 156 additions and 41 deletions.
  1. +72 −0 benchmark/fs-readfile.js
  2. +12 −0 benchmark/http.sh
  3. +70 −39 benchmark/http_simple.js
  4. +2 −2 benchmark/io.js
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@@ -0,0 +1,72 @@
+// Call fs.readFile over and over again really fast.
+// Then see how many times it got called.
+// Yes, this is a silly benchmark. Most benchmarks are silly.
+
+var path = require('path');
+var filename = path.resolve(__dirname, 'http.sh');
+var fs = require('fs');
+var count = 0;
+var go = true;
+var len = -1;
+var assert = require('assert');
+
+var concurrency = 1;
+var encoding = null;
+var time = 10;
+
+for (var i = 2; i < process.argv.length; i++) {
+ var arg = process.argv[i];
+ if (arg.match(/^-e$/)) {
+ encoding = process.argv[++i] || null;
+ } else if (arg.match(/^-c$/)) {
+ concurrency = ~~process.argv[++i];
+ if (concurrency < 1) concurrency = 1;
+ } else if (arg === '-t') {
+ time = ~~process.argv[++i];
+ if (time < 1) time = 1;
+ }
+}
+
+
+setTimeout(function() {
+ go = false;
+}, time * 1000);
+
+function round(n) {
+ return Math.floor(n * 100) / 100;
+}
+
+var start = Date.now();
+while (concurrency--) readFile();
+
+function readFile() {
+ if (!go) {
+ process.stdout.write('\n');
+ console.log('read the file %d times (higher is better)', count);
+ var end = Date.now();
+ var elapsed = (end - start) / 1000;
+ var ns = elapsed * 1E9;
+ var nsper = round(ns / count);
+ console.log('%d ns per read (lower is better)', nsper);
+ var readsper = round(count / (ns / 1E9));
+ console.log('%d reads per sec (higher is better)', readsper);
+ process.exit(0);
+ return;
+ }
+
+ if (!(count % 1000)) {
+ process.stdout.write('.');
+ }
+
+ if (encoding) fs.readFile(filename, encoding, then);
+ else fs.readFile(filename, then);
+
+ function then(er, data) {
+ assert.ifError(er);
+ count++;
+ // basic sanity test: we should get the same number of bytes each time.
+ if (count === 1) len = data.length;
+ else assert(len === data.length);
+ readFile();
+ }
+}
View
@@ -0,0 +1,12 @@
+#!/bin/bash
+cd "$(dirname "$(dirname $0)")"
+sudo sysctl -w net.inet.ip.portrange.first=12000
+sudo sysctl -w net.inet.tcp.msl=1000
+sudo sysctl -w kern.maxfiles=1000000 kern.maxfilesperproc=1000000
+ulimit -n 100000
+
+./node benchmark/http_simple.js || exit 1 &
+sleep 1
+
+ab -n 30000 -c 100 http://127.0.0.1:8000/${TYPE:-bytes}/${LENGTH:-1024} | grep Req
+killall node
View
@@ -1,75 +1,99 @@
-path = require("path");
-exec = require("child_process").exec;
-http = require("http");
+var path = require('path'),
+ exec = require('child_process').exec,
+ http = require('http');
-port = parseInt(process.env.PORT || 8000);
+var port = parseInt(process.env.PORT || 8000);
console.log('pid ' + process.pid);
-fixed = ""
-for (var i = 0; i < 20*1024; i++) {
- fixed += "C";
+var fixed = makeString(20 * 1024, 'C'),
+ storedBytes = {},
+ storedBuffer = {},
+ storedUnicode = {};
+
+var useDomains = process.env.NODE_USE_DOMAINS;
+
+// set up one global domain.
+if (useDomains) {
+ var domain = require('domain');
+ var gdom = domain.create();
+ gdom.on('error', function(er) {
+ console.log('Error on global domain', er);
+ throw er;
+ });
+ gdom.enter();
}
-stored = {};
-storedBuffer = {};
-
var server = http.createServer(function (req, res) {
- var commands = req.url.split("/");
+ if (useDomains) {
+ var dom = domain.create();
+ dom.add(req);
+ dom.add(res);
+ }
+
+ var commands = req.url.split('/');
var command = commands[1];
- var body = "";
+ var body = '';
var arg = commands[2];
var n_chunks = parseInt(commands[3], 10);
var status = 200;
- if (command == "bytes") {
- var n = parseInt(arg, 10)
+ if (command == 'bytes') {
+ var n = ~~arg;
if (n <= 0)
- throw "bytes called with n <= 0"
- if (stored[n] === undefined) {
- console.log("create stored[n]");
- stored[n] = "";
- for (var i = 0; i < n; i++) {
- stored[n] += "C"
- }
+ throw new Error('bytes called with n <= 0')
+ if (storedBytes[n] === undefined) {
+ console.log('create storedBytes[n]');
+ storedBytes[n] = makeString(n, 'C');
}
- body = stored[n];
+ body = storedBytes[n];
- } else if (command == "buffer") {
- var n = parseInt(arg, 10)
- if (n <= 0) throw new Error("bytes called with n <= 0");
+ } else if (command == 'buffer') {
+ var n = ~~arg;
+ if (n <= 0)
+ throw new Error('buffer called with n <= 0');
if (storedBuffer[n] === undefined) {
- console.log("create storedBuffer[n]");
+ console.log('create storedBuffer[n]');
storedBuffer[n] = new Buffer(n);
for (var i = 0; i < n; i++) {
- storedBuffer[n][i] = "C".charCodeAt(0);
+ storedBuffer[n][i] = 'C'.charCodeAt(0);
}
}
body = storedBuffer[n];
- } else if (command == "quit") {
+ } else if (command == 'unicode') {
+ var n = ~~arg;
+ if (n <= 0)
+ throw new Error('unicode called with n <= 0');
+ if (storedUnicode[n] === undefined) {
+ console.log('create storedUnicode[n]');
+ storedUnicode[n] = makeString(n, '\u263A');
+ }
+ body = storedUnicode[n];
+
+ } else if (command == 'quit') {
res.connection.server.close();
- body = "quitting";
+ body = 'quitting';
- } else if (command == "fixed") {
+ } else if (command == 'fixed') {
body = fixed;
- } else if (command == "echo") {
- res.writeHead(200, { "Content-Type": "text/plain",
- "Transfer-Encoding": "chunked" });
+ } else if (command == 'echo') {
+ res.writeHead(200, { 'Content-Type': 'text/plain',
+ 'Transfer-Encoding': 'chunked' });
req.pipe(res);
return;
} else {
status = 404;
- body = "not found\n";
+ body = 'not found\n';
}
// example: http://localhost:port/bytes/512/4
// sends a 512 byte body in 4 chunks of 128 bytes
if (n_chunks > 0) {
- res.writeHead(status, { "Content-Type": "text/plain",
- "Transfer-Encoding": "chunked" });
+ res.writeHead(status, { 'Content-Type': 'text/plain',
+ 'Transfer-Encoding': 'chunked' });
// send body in chunks
var len = body.length;
var step = ~~(len / n_chunks) || len;
@@ -82,13 +106,20 @@ var server = http.createServer(function (req, res) {
} else {
var content_length = body.length.toString();
- res.writeHead(status, { "Content-Type": "text/plain",
- "Content-Length": content_length });
+ res.writeHead(status, { 'Content-Type': 'text/plain',
+ 'Content-Length': content_length });
res.end(body);
}
-
});
+function makeString(size, c) {
+ var s = '';
+ while (s.length < size) {
+ s += c;
+ }
+ return s;
+}
+
server.listen(port, function () {
console.log('Listening at http://127.0.0.1:'+port+'/');
});
View
@@ -62,7 +62,7 @@ function readtest(size, bsize) {
function wt(tsize, bsize, done) {
var start = Date.now();
- s = writetest(tsize, bsizes[0]);
+ s = writetest(tsize, bsize);
s.addListener('close', function() {
var end = Date.now();
var diff = end - start;
@@ -73,7 +73,7 @@ function wt(tsize, bsize, done) {
function rt(tsize, bsize, done) {
var start = Date.now();
- s = readtest(tsize, bsizes[0]);
+ s = readtest(tsize, bsize);
s.addListener('close', function() {
var end = Date.now();
var diff = end - start;

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