var Fiber = require('fibers'); for (var jj = 0; jj < 10; ++jj) { var fibers = []; for (var ii = 0; ii < 200; ++ii) { var fn = Fiber(function() { Fiber.yield(); }); fn.run(); fibers.push(fn); } for (var ii = 0; ii < fibers.length; ++ii) { fibers[ii].run(); } } console.log('pass');