[maemo-developers] javascript perf on the n770 and n800

[From: Acadia Secure Networks]

Sean,

here is what I got:

> Nokia N800 - Standard Nokia provided Browser
>
> Try/Catch with errors   415
> Layer movement         1895
> Random number engine   2593
> Math engine            4655
> DOM speed              6626
> Array functions        1312
> String functions       1475
> Ajax declaration       1274
> Total Duration        20245 ms


If it is any consolation to you, I tried to run the test on the Windows 
Mobile 5.0 IE browser and of course it failed since that browser does 
not support javascript. When I then tried to run it on Minimo (v0.2)  on 
the same device it "soft-bricked" the device  so I had to do a hard 
reset of Windows Mobile 5.0.


Best Regards,

 

John Holmblad

 

Acadia Secure Networks


<mailto:jholmblad at verizon.net>

 


Sean Jensen-Grey wrote:
> I was wondering what the js perf is on the n770 and n800?
>
> LowTideGames just wrote a game for the iPhone using a fair bit of
> javascript and the <canvas> tag. But JS perf is so horribly slow 
> that it does not run. Initially we thought it was a
> poorly implemented <canvas> tag, this is not the case. Canvas tag runs
> fine. It is javascript itself that is slow on the iPhone.
>
> It appears that a NOP function takes about 70 microseconds. In our tests,
> 1000 executions of a function which does nothing took 74 milliseconds on
> the iPhone.
>
> There is a thread over on ajaxian about js perf on the iphone, and links
> to,
>
> http://celtickane.com/projects/jsspeed.php
>
> iphone results,
>
> http://ajaxian.com/archives/iphone-javascript-and-spec-benchmark
>
> Could someone run the above benchmark (jsspeed) on an N770 and N800 and reply to this message?
> We would like to to an idea of how much js compute power is available on
> embedded internet devices. Esp Opera 9 embedded vs, iPhone Safari.
>
> We also have a benchmark that measures the speed of the canvas tag.
>
> http://lowtidegames.com/test/shapesonly.html
>
> Note: This script posts the results of the test back to our server so we
> could record the results from the iPhone.
>
> jsspeed on a macbookpro, various browers, all times in milliseconds
>
> firefox 2.0.0.4
>
> Try/Catch with errors   52
> Layer movement  148
> Random number engine    126
> Math engine     209
> DOM speed       160
> Array functions         70
> String functions        196
> Ajax declaration        46
> Total Duration  1007 ms
>
> Safari 3
>
> Try/Catch with errors   6
> Layer movement  45
> Random number engine    37
> Math engine     56
> DOM speed       27
> Array functions 14
> String functions        15
> Ajax declaration        10
> Total Duration  210 ms
>
> Opera 9.21
>
> Try/Catch with errors   13
> Layer movement  135
> Random number engine    100
> Math engine     124
> DOM speed       59
> Array functions 56
> String functions        62
> Ajax declaration        40
> Total Duration  589 ms
>
> Sean
>
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