perftest.js

const fs = require('fs');
const Terminal = require('./lib/Terminal').Terminal;

class TestTerminal extends Terminal {
  writeSync(data) {
    this.writeBuffer.push(data);
    this._innerWrite();
  }
}

function throughput(filename, impl, recycling) {
  let data = fs.readFileSync(filename);
  let content = '';
  while (content.length < 50000000)  // test with +50MB
    content += data.toString('UTF-8');
  
  const terminal = new TestTerminal({
    cols: 80,
    rows: 25,
    scrollback: 1000,
    experimentalBufferLineImpl: impl,
    experimentalPushRecycling: recycling
  });
  let start = new Date();
  terminal.writeSync(content);
  let duration = (new Date()) - (start);
  console.log({
    BufferLineType: impl,
    Recycling: recycling,
    Throughput: Number(1000/duration*content.length/1024/1024).toFixed(2) + ' MB/s',
    File: filename,
    Duration: duration,
    Size: content.length
  });
}

throughput('./benchmark_data1', 'JsArray', false)
throughput('./benchmark_data1', 'TypedArray', false)
throughput('./benchmark_data1', 'JsArray', true)
throughput('./benchmark_data1', 'TypedArray', true)