415gotit
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dela
247
node_modules/msgpack-lite/lib/benchmark-stream.js
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vendored
Executable file
247
node_modules/msgpack-lite/lib/benchmark-stream.js
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#!/usr/bin/env node
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var PassThrough = require("stream").PassThrough;
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var async = require("async");
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var msgpack = require("../");
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var Encoder = require("./encoder").Encoder;
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var Decoder = require("./decoder").Decoder;
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var notepack = require("notepack");
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var pkg = require("../package.json");
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// a sample fluentd message
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var data = ["tag", [[1440949922, {"message": "hi there"}]]];
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var packed = msgpack.encode(data); // 30 bytes per message
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var packsize = packed.length;
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var opcount = 1000000;
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var joincount = 100;
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var packjoin = repeatbuf(packed, joincount); // 3KB per chunk
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var limit = 2;
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var argv = Array.prototype.slice.call(process.argv, 2);
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if (argv[0] === "-v") {
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console.warn(pkg.name + " " + pkg.version);
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process.exit(0);
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}
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if (argv[0] - 0) limit = argv.shift() - 0;
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var list = [
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['stream.write(msgpack.encode(obj));', encode1],
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['stream.write(notepack.encode(obj));', encode4],
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['msgpack.Encoder().on("data",ondata).encode(obj);', encode2],
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['msgpack.createEncodeStream().write(obj);', encode3],
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['stream.write(msgpack.decode(buf));', decode1],
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['stream.write(notepack.decode(buf));', decode4],
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['msgpack.Decoder().on("data",ondata).decode(buf);', decode2],
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['msgpack.createDecodeStream().write(buf);', decode3]
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];
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function encode1(callback) {
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var stream = new PassThrough();
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var cnt = counter(callback);
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stream.on("data", cnt.buf);
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stream.on("end", cnt.end);
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for (var j = 0; j < opcount; j++) {
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stream.write(msgpack.encode(data));
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}
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stream.end();
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}
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function encode2(callback) {
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var stream = new PassThrough();
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var cnt = counter(callback);
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stream.on("data", cnt.buf);
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stream.on("end", cnt.end);
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var encoder = Encoder();
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encoder.on("data", function(chunk) {
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stream.write(chunk);
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});
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encoder.on("end", function() {
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stream.end();
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});
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for (var j = 0; j < opcount; j++) {
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encoder.encode(data);
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}
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encoder.end();
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}
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function encode3(callback) {
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var stream = msgpack.createEncodeStream();
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var cnt = counter(callback);
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stream.on("data", cnt.buf);
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stream.on("end", cnt.end);
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for (var j = 0; j < opcount; j++) {
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stream.write(data);
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}
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stream.end();
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}
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function encode4(callback) {
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var stream = new PassThrough();
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var cnt = counter(callback);
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stream.on("data", cnt.buf);
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stream.on("end", cnt.end);
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for (var j = 0; j < opcount; j++) {
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stream.write(notepack.encode(data));
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}
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stream.end();
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}
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function decode1(callback) {
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var stream = new PassThrough({objectMode: true});
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var cnt = counter(callback);
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stream.on("data", cnt.inc);
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stream.on("end", cnt.end);
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for (var j = 0; j < opcount; j++) {
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stream.write(msgpack.decode(packed));
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}
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stream.end();
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}
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function decode2(callback) {
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var stream = new PassThrough({objectMode: true});
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var cnt = counter(callback);
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stream.on("data", cnt.inc);
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stream.on("end", cnt.end);
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var decoder = Decoder();
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decoder.on("data", function(chunk) {
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stream.write(chunk);
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});
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decoder.on("end", function() {
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stream.end();
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});
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for (var j = 0; j < opcount / joincount; j++) {
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decoder.decode(packjoin);
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}
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decoder.end();
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}
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function decode3(callback) {
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var stream = msgpack.createDecodeStream();
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var cnt = counter(callback);
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stream.on("data", cnt.inc);
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stream.on("end", cnt.end);
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for (var j = 0; j < opcount / joincount; j++) {
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stream.write(packjoin);
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}
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stream.end();
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}
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function decode4(callback) {
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var stream = new PassThrough({objectMode: true});
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var cnt = counter(callback);
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stream.on("data", cnt.inc);
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stream.on("end", cnt.end);
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for (var j = 0; j < opcount; j++) {
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stream.write(notepack.decode(packed));
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}
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stream.end();
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}
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function rpad(str, len, chr) {
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if (!chr) chr = " ";
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str += "";
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while (str.length < len) str += chr;
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return str;
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}
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function lpad(str, len, chr) {
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if (!chr) chr = " ";
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str += "";
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while (str.length < len) str = chr + str;
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return str;
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}
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function repeatbuf(buf, cnt) {
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var array = [];
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for (var i = 0; i < cnt; i++) {
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array.push(buf);
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}
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return Buffer.concat(array);
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}
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function counter(callback) {
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var cnt = 0;
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return {buf: b, inc: i, end: e};
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function b(buf) {
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cnt += buf.length / packsize;
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}
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function i() {
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cnt++;
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}
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function e() {
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cnt = Math.round(cnt);
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callback(null, cnt);
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}
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}
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function run() {
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// task filter
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if (argv.length) {
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list = list.filter(function(pair) {
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var name = pair[0];
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var match = argv.filter(function(grep) {
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return (name.indexOf(grep) > -1);
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});
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return match.length;
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});
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}
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// run tasks repeatedly
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var tasks = [];
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for (var i = 0; i < limit; i++) {
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tasks.push(oneset);
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}
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async.series(tasks, end);
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// run a series of tasks
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function oneset(callback) {
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async.eachSeries(list, bench, callback);
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}
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// run a single benchmark
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function bench(pair, callback) {
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process.stdout.write(".");
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var func = pair[1];
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var start = new Date() - 0;
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func(function(err, cnt) {
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var end = new Date() - 0;
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var array = pair[2] || (pair[2] = []);
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array.push(end - start);
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pair[3] = cnt;
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setTimeout(callback, 100);
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});
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}
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// show result
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function end() {
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var title = "operation (" + opcount + " x " + limit + ")";
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process.stdout.write("\n");
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// table header
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var COL1 = 48;
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console.log(rpad(title, COL1), "|", " op ", "|", " ms ", "|", " op/s ");
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console.log(rpad("", COL1, "-"), "|", "------:", "|", "----:", "|", "-----:");
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// table body
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list.forEach(function(pair) {
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var name = pair[0];
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var op = pair[3];
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var array = pair[2];
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array = array.sort(function(a, b) {
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return a > b;
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});
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var fastest = array[0];
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var score = Math.floor(opcount / fastest * 1000);
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console.log(rpad(name, COL1), "|", lpad(op, 7), "|", lpad(fastest, 5), "|", lpad(score, 6));
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});
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}
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}
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run();
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