In these tests, we are putting the Firefox 4.0 build with JaegerMonkey against Firefox 4.0 with the old TraceMonkey. The latest dev build of Chromium 7 and Opera 10.62 are also included.
In the V8 Benchmark, higher scores are better. For this test, we ran the V8 benchmark five times and the arithmetic mean is taken and represented in the graph above.
As you can see, JaegerMonkey scores way higher that TraceMonkey in all of the tests. While TraceMonkey scored around 600, JaegerMonkey scored around 1100 - a huge improvement.
It is still behind the fastest browsers around, but it is closing in.
In the SunSpider test, lower scores are better.
Here, the results are quite mixed. No one browser completely dominates in this case. However, if you compare Firefox with JaegerMonkey and the one with TraceMonkey, JaegerMonkey is always a bit faster. All this will add up in the final time.
Here is the final time:
Chromium is still the fastest, but the Firefox with JaegerMonkey is only around 150 ms slower. This is a great improvement from Firefox.
So, JaegerMonkey is indeed fast. It is much faster than the old TraceMonkey. However, Opera's Carakan and Chromium/Chrome's V8 are still faster. Nevertheless, JaegerMonkey is closing in big time.
Mozilla is optimizing the JaegerMonkey engine and it will be faster than what we tested today. However, it seem highly unlikely that they will be able to overtake either V8 or Carakan when Firefox 4 final is released.