Since the third beta of Firefox 3.1 promised improvements in the TraceMonkey JS engine I was looking forward to run two of the most often used JavaScript benchmarks: SunSpider and the V8 Benchmark Suite.
I ran both benchmarks multiple times on my machine under identical system conditions (CPU load, memory utilization, running processes, etc.) and took Firefox as 100%.
| Benchmark | Comment | Firefox 3.1 beta 3 | Safari 4 beta 1 | Delta |
|---|
| SunSpider | Lower is better | 1291.4ms | 803.8ms | 38% |
| V8 Suite | Bigger is better | 295 points | 1835 points | 522% |
| Peacekeeper | Bigger is better | 634 points | 1524 points | 140% |
Once again: These are no real-life scenarios, but specific benchmark suites for measuring JavaScript performance.
Update: Added Futuremark's Peacekeeper results.
