Safari Vs Chrome iOS JavaScript Benchmark

#1

Post by dkokelley » Fri, Jun 29, 2012, 6:05 PM UTC

Safari Vs Chrome iOS JavaScript Benchmark
pastebin.com

Re: Safari Vs Chrome iOS JavaScript Benchmark

#2

Post by wedtm » Fri, Jun 29, 2012, 6:11 PM UTC

...

Chrome on iOS is using the native iOS render, IIRC. So wouldn't this test be testing the same thing?

Re: Safari Vs Chrome iOS JavaScript Benchmark

#3

Post by jasonlotito » Fri, Jun 29, 2012, 6:13 PM UTC

wedtm wrote: post #2

... Chrome on iOS is using the native iOS render, IIRC. So wouldn't this test be testing the same thing?

No, not exactly.

Chrome is using the web view without JIT compiling for JavaScript that Safari can take advantage of. That being said, it's not something that's surprising. It's a known issue.

Re: Safari Vs Chrome iOS JavaScript Benchmark

#4

Post by geoffpado » Fri, Jun 29, 2012, 6:13 PM UTC

wedtm wrote: post #2

... Chrome on iOS is using the native iOS render, IIRC. So wouldn't this test be testing the same thing?

No, apps using UIWebView don't get the "fast" JS engine, for security reasons. Only MobileSafari has that.

EDIT: Gah, beaten by a few seconds by jasonlotito.

Re: Safari Vs Chrome iOS JavaScript Benchmark

#5

Post by [deleted] » Fri, Jun 29, 2012, 6:13 PM UTC

wedtm wrote: post #2

... Chrome on iOS is using the native iOS render, IIRC. So wouldn't this test be testing the same thing?

[deleted]

Re: Safari Vs Chrome iOS JavaScript Benchmark

#6

Post by mschalle » Fri, Jun 29, 2012, 6:14 PM UTC

It looks better and feels snappier, so these tests are surprising...

Re: Safari Vs Chrome iOS JavaScript Benchmark

#7

Post by dkokelley » Fri, Jun 29, 2012, 6:14 PM UTC

wedtm wrote: post #2

... Chrome on iOS is using the native iOS render, IIRC. So wouldn't this test be testing the same thing?

From what I understand, Chrome (and any non-native app) doesn't have access to the JavaScript engine that Safari does. That's why the JavaScript benchmark results are so disparate between Safari and Chrome for iOS.

Re: Safari Vs Chrome iOS JavaScript Benchmark

#8

Post by dkokelley » Fri, Jun 29, 2012, 6:19 PM UTC

mschalle wrote: post #6

It looks better and feels snappier, so these tests are surprising...

It wouldn't surprise me to discover that Google's team did lots of their own performance tweaking and tuning to compensate for their disadvantage. I do love the responsiveness. Now their Gmail app on the other hand was painful for me to use.

Re: Safari Vs Chrome iOS JavaScript Benchmark

#9

Post by jcampbell1 » Fri, Jun 29, 2012, 6:23 PM UTC

Can someone explain how an application developer with access to webkit+Nitro could cause problems? Would the developer have to write a malicious app, or would a maliciously crafted webpage be able to exploit the OS?

Re: Safari Vs Chrome iOS JavaScript Benchmark

#10

Post by urbanjunkie » Fri, Jun 29, 2012, 6:23 PM UTC

mschalle wrote: post #6

It looks better and feels snappier, so these tests are surprising...

The snappiness could be because iOS Chrome pre-fetches pages if you're on a wifi network. A lot of the lag of Safari on iOS seems to be in the actual fetching of pages.