It's really true.

I ran my tiny benchmarks 
(http://weather-dimensions.com/Dan/JavaScriptBenchmark.html) before and after 
upgrading my iPad's OS.  The results...

Before: 30M ops/sec     1M sends/sec
After:  150M ops/sec    4M sends/sec

I found some erratic behavior running normal Lively pages -- we'll be tracking 
that down in the next couple of weeks.

I haven't had a chance to try a new iPad, but the extra processor should make a 
difference as well.

Think Live Web

        - Dan

>On Mar 3, 2011, at 3:00 PM, Casey Ransberger wrote:
>
>> It would seem Safari is getting a new JS engine. Apple is touting "up to 
>> twice" the performance in Safari; that's almost certainly not coming out of 
>> a macro benchmark, though, so I strongly doubt that anyone with an app will 
>> see that much of a boost.
>>
>> All the same, faster JS might be good for Lively on iOS, where perf is 
>> currently more pain than I can tolerate for more than a few minutes at a 
>> time.
>>
>> This is supposed to be coming with iOS 4.3.
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