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Improves the performance when moving small buffers by 5%, and it adds a benchmark to avoid regression in that area. In all other cases it is equally performant to current master. Full performance results available at: https://gist.github.com/mcollina/717c35ad07d15710b6b9. PR-URL: https://github.com/nodejs/node/pull/4354 Reviewed-By: James M Snell <jasnell@gmail.com>process-exit-stdio-flushing
Matteo Collina
9 years ago
2 changed files with 144 additions and 15 deletions
@ -0,0 +1,96 @@ |
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// test the speed of .pipe() with sockets
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var common = require('../common.js'); |
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var PORT = common.PORT; |
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var bench = common.createBenchmark(main, { |
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len: [4, 8, 16, 32, 64, 128, 512, 1024], |
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type: ['buf'], |
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dur: [5], |
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}); |
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var dur; |
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var len; |
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var type; |
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var chunk; |
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var encoding; |
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function main(conf) { |
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dur = +conf.dur; |
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len = +conf.len; |
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type = conf.type; |
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switch (type) { |
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case 'buf': |
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chunk = new Buffer(len); |
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chunk.fill('x'); |
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break; |
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case 'utf': |
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encoding = 'utf8'; |
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chunk = new Array(len / 2 + 1).join('ü'); |
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break; |
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case 'asc': |
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encoding = 'ascii'; |
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chunk = new Array(len + 1).join('x'); |
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break; |
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default: |
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throw new Error('invalid type: ' + type); |
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break; |
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} |
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server(); |
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} |
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var net = require('net'); |
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function Writer() { |
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this.received = 0; |
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this.writable = true; |
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} |
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Writer.prototype.write = function(chunk, encoding, cb) { |
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this.received += chunk.length; |
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if (typeof encoding === 'function') |
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encoding(); |
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else if (typeof cb === 'function') |
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cb(); |
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return true; |
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}; |
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// doesn't matter, never emits anything.
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Writer.prototype.on = function() {}; |
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Writer.prototype.once = function() {}; |
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Writer.prototype.emit = function() {}; |
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function server() { |
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var writer = new Writer(); |
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// the actual benchmark.
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var server = net.createServer(function(socket) { |
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socket.pipe(writer); |
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}); |
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server.listen(PORT, function() { |
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var socket = net.connect(PORT); |
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socket.on('connect', function() { |
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bench.start(); |
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socket.on('drain', send) |
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send() |
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setTimeout(function() { |
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var bytes = writer.received; |
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var gbits = (bytes * 8) / (1024 * 1024 * 1024); |
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bench.end(gbits); |
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}, dur * 1000); |
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function send() { |
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socket.cork(); |
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while(socket.write(chunk, encoding)) {} |
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socket.uncork(); |
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} |
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}); |
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}); |
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} |
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