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benchmark: chunky http client benchmark variation
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PR-URL: #228
Reviewed-By: Trevor Norris <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
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Rudi Cilibrasi authored and trevnorris committed Mar 9, 2015
1 parent 1a3ca82 commit 030a923
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102 changes: 102 additions & 0 deletions benchmark/net/chunky_http_client.js
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'use strict';

// test HTTP throughput in fragmented header case
var common = require('../common.js');
var net = require('net');
var test = require('../../test/common.js');

var bench = common.createBenchmark(main, {
len: [1, 4, 8, 16, 32, 64, 128],
num: [5, 50, 500, 2000],
type: ['send'],
});


function main(conf) {
var len = +conf.len;
var num = +conf.num;
var type = conf.type;
var todo = [];
var headers = [];
// Chose 7 because 9 showed "Connection error" / "Connection closed"
// An odd number could result in a better length dispersion.
for (var i = 7; i <= 7 * 7 * 7; i *= 7)
headers.push(Array(i + 1).join('o'));

function WriteHTTPHeaders(channel, has_keep_alive, extra_header_count) {
todo = []
todo.push('GET / HTTP/1.1');
todo.push('Host: localhost');
todo.push('Connection: keep-alive');
todo.push('Accept: text/html,application/xhtml+xml,' +
'application/xml;q=0.9,image/webp,*/*;q=0.8');
todo.push('User-Agent: Mozilla/5.0 (X11; Linux x86_64) ' +
'AppleWebKit/537.36 (KHTML, like Gecko) ' +
'Chrome/39.0.2171.71 Safari/537.36');
todo.push('Accept-Encoding: gzip, deflate, sdch');
todo.push('Accept-Language: en-US,en;q=0.8');
for (var i = 0; i < extra_header_count; i++) {
// Utilize first three powers of a small integer for an odd cycle and
// because the fourth power of some integers overloads the server.
todo.push('X-Header-' + i + ': ' + headers[i % 3]);
}
todo.push('');
todo.push('');
todo = todo.join('\r\n');
// Using odd numbers in many places may increase length coverage.
var chunksize = 37;
for (i = 0; i < todo.length; i += chunksize) {
var cur = todo.slice(i, i + chunksize);
channel.write(cur);
}
}

var success = 0;
var failure = 0;
var min = 10;
var size = 0;
var mod = 317;
var mult = 17;
var add = 11;
var count = 0;
var PIPE = test.PIPE;
var socket = net.connect(PIPE, function() {
bench.start();
WriteHTTPHeaders(socket, 1, len);
socket.setEncoding('utf8')
socket.on('data', function(d) {
var did = false;
var pattern = 'HTTP/1.1 200 OK\r\n';
if ((d.length === pattern.length && d === pattern) ||
(d.length > pattern.length &&
d.slice(0, pattern.length) === pattern)) {
success += 1;
did = true;
} else {
pattern = 'HTTP/1.1 '
if ((d.length === pattern.length && d === pattern) ||
(d.length > pattern.length &&
d.slice(0, pattern.length) === pattern)) {
failure += 1;
did = true;
}
}
size = (size * mult + add) % mod;
if (did) {
count += 1;
if (count === num) {
bench.end(count);
} else {
WriteHTTPHeaders(socket, 1, min + size);
}
}
});
socket.on('close', function() {
console.log('Connection closed');
});

socket.on('error', function() {
throw new Error('Connection error');
});
});
}
47 changes: 47 additions & 0 deletions benchmark/net/http_server_for_chunky_client.js
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'use strict';

var path = require('path');
var http = require('http');
var fs = require('fs');
var spawn = require('child_process').spawn;
var common = require('../common.js')
var test = require('../../test/common.js')
var pep = path.dirname(process.argv[1]) + '/chunky_http_client.js';
var PIPE = test.PIPE;

var server;
try {
fs.unlinkSync(PIPE);
} catch (e) { /* ignore */ }

server = http.createServer(function(req, res) {
res.writeHead(200, { 'content-type': 'text/plain',
'content-length': '2' });
res.end('ok');
});

server.on('error', function(err) {
throw new Error('server error: ' + err);
});

try {
var child;

server.listen(PIPE);

child = spawn(process.execPath, [pep], { });

child.on('error', function(err) {
throw new Error('spawn error: ' + err );
});

child.stdout.pipe(process.stdout);

child.on('exit', function (exitCode) {
console.error('Child exited with code: ' + exitCode);
});

} catch(e) {
throw new Error('error: ' + e );
}

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