node/test/pummel/test-next-tick-loops-quick.js

// Copyright Joyent, Inc. and other Node contributors.
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//
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var common = require('../common');
var assert = require('assert');

// Regression test GH-511: https://github.com/joyent/node/issues/issue/511
// Make sure nextTick loops quickly

setTimeout(function() {
  t = Date.now() - t;
  STOP = 1;
  console.log(['ctr: ', ctr, ', t:', t, 'ms -> ', (ctr / t).toFixed(2), 'KHz']
         .join(''));
  assert.ok(ctr > 1000);
}, 2000);

var ctr = 0;
var STOP = 0;
var t = Date.now() + 2;
while (t > Date.now()); //get in sync with clock

(function foo() {
  if (STOP) return;
  process.nextTick(foo);
  ctr++;
})();