The Tor Browser / file revision

 //Shell version of Clock Benchmark: https://bug548388.bugzilla.mozilla.org/attachment.cgi?id=434576

 var t0;

 var tl;

 function alloc(dt) {

     if (dt > 100)

         dt = 100;

     for (var i = 0; i < dt * 1000; ++i) {

         var o = new String("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");

     }

 }

 function cycle() {

     if (!running)

         return;

     var t1 = new Date;

     if (t0 == undefined) t0 = t1;

     if (tl != undefined) {

         var dt = t1 - tl;

         alloc(dt);

     }

     tl = t1;

     if(t1 - t0 > (5 * 1000))

         running = false;

 }

 var running = true;

 while(running)

     cycle();