node/benchmark/http/end-vs-write-end.js at master · anchnk/node · GitHub

History

58 lines (50 loc) · 1.24 KB

Raw

// When calling .end(buffer) right away, this triggers a "hot path"

// optimization in http.js, to avoid an extra write call.

// However, the overhead of copying a large buffer is higher than

// the overhead of an extra write() call, so the hot path was not

// always as hot as it could be.

// Verify that our assumptions are valid.

'use strict';

var common = require('../common.js');

var bench = common.createBenchmark(main, {

type: ['asc', 'utf', 'buf'],

len: [64 * 1024, 128 * 1024, 256 * 1024, 1024 * 1024],

c: [100],

method: ['write', 'end']

});

function main(conf) {

const http = require('http');

var chunk;

var len = conf.len;

switch (conf.type) {

case 'buf':

chunk = Buffer.alloc(len, 'x');

break;

case 'utf':

chunk = 'ü'.repeat(len / 2);

break;

case 'asc':

chunk = 'a'.repeat(len);

break;

}

function write(res) {

res.write(chunk);

res.end();

}

function end(res) {

res.end(chunk);

}

var method = conf.method === 'write' ? write : end;

var server = http.createServer(function(req, res) {

method(res);

});

server.listen(common.PORT, function() {

bench.http({

connections: conf.c

}, function() {

server.close();

});

}

node/benchmark/http/end-vs-write-end.js at master · anchnk/node · GitHub

Expand file tree

Breadcrumbs

end-vs-write-end.js

Latest commit

History

Breadcrumbs

end-vs-write-end.js

File metadata and controls