[lively-kernel] Nitro?

[Alan Kay]

Hi Dan

Did you try the differential test that you did before? Or did Bert do it?

i.e.

Squeak vs JS-in-browser on a Mac

vs

the same on the iPad

I seem to recall that the differential was a factor of 12 slower on the iPad.

I visited Apple after this and complained to Bud Tribble.

Should I guess that the differential is now "only" a factor of 4?

Cheers,

Alan




________________________________
From: Dan Ingalls <danhhingalls at gmail.com>
To: lively-kernel at hpi.uni-potsdam.de
Sent: Fri, March 11, 2011 3:45:14 PM
Subject: Re: [lively-kernel] Nitro?

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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