add hw2

node_modules/thread-stream/bench.js

@@ -0,0 +1,85 @@
+'use strict'
+
+const bench = require('fastbench')
+const SonicBoom = require('sonic-boom')
+const ThreadStream = require('.')
+const Console = require('console').Console
+const fs = require('fs')
+const { join } = require('path')
+
+const core = fs.createWriteStream('/dev/null')
+const fd = fs.openSync('/dev/null', 'w')
+const sonic = new SonicBoom({ fd })
+const sonicSync = new SonicBoom({ fd, sync: true })
+const out = fs.createWriteStream('/dev/null')
+const dummyConsole = new Console(out)
+const threadStreamSync = new ThreadStream({
+  filename: join(__dirname, 'test', 'to-file.js'),
+  workerData: { dest: '/dev/null' },
+  bufferSize: 4 * 1024 * 1024,
+  sync: true
+})
+const threadStreamAsync = new ThreadStream({
+  filename: join(__dirname, 'test', 'to-file.js'),
+  workerData: { dest: '/dev/null' },
+  bufferSize: 4 * 1024 * 1024,
+  sync: false
+})
+
+const MAX = 10000
+
+let str = ''
+
+for (let i = 0; i < 100; i++) {
+  str += 'hello'
+}
+
+setTimeout(doBench, 100)
+
+const run = bench([
+  function benchThreadStreamSync (cb) {
+    for (let i = 0; i < MAX; i++) {
+      threadStreamSync.write(str)
+    }
+    setImmediate(cb)
+  },
+  function benchThreadStreamAsync (cb) {
+    threadStreamAsync.once('drain', cb)
+    for (let i = 0; i < MAX; i++) {
+      threadStreamAsync.write(str)
+    }
+  },
+  function benchSonic (cb) {
+    sonic.once('drain', cb)
+    for (let i = 0; i < MAX; i++) {
+      sonic.write(str)
+    }
+  },
+  function benchSonicSync (cb) {
+    sonicSync.once('drain', cb)
+    for (let i = 0; i < MAX; i++) {
+      sonicSync.write(str)
+    }
+  },
+  function benchCore (cb) {
+    core.once('drain', cb)
+    for (let i = 0; i < MAX; i++) {
+      core.write(str)
+    }
+  },
+  function benchConsole (cb) {
+    for (let i = 0; i < MAX; i++) {
+      dummyConsole.log(str)
+    }
+    setImmediate(cb)
+  }
+], 1000)
+
+function doBench () {
+  run(function () {
+    run(function () {
+      // TODO figure out why it does not shut down
+      process.exit(0)
+    })
+  })
+}