Nitro

Why Safari got Nitro and Web Clips and UIWebView didn't

As we posted the other day, while Safari in iOS 4.3 got a huge speed boost thanks to the Nitro JavaScript engine, asynchronous mode, and HTML 5 caching, bookmarking a site to the Home Screen (Web Clips) that launch in full-screen mode, or browsing inside an app (UIWebView) didn't. That meant, while web apps on the home screen and web pages embedded in apps were as fast as they were in iOS 4.2, they weren't as fast as Safari in iOS 4.3.

The technical reason for this is because Nitro is using Just-in-Time (JIT) compilation. Daring Fireball says:

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iPad 2 JavaScript speed test

CNET UK was able to take the iPad 2 running iOS 4.3 out for a test drive and the results are hypercar impressive -- 2097ms. iOS 4.3 and its new Safari Nitro engine gets a lot of the credit -- it blows iPhone 4 and the original iPad past the likes of the Nexus S and Galaxy Tab as well (they've been unable to test a Xoom as of yet), but that Apple A5 is enough to power iPad 2 to very top.

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iOS 4 vs. Android 2.2 - Browser battle battle!

Which has the fastest browser, Apple's iOS 4 or Google's Android 2.2? We're used to browser battles here on TiPb, but how about a browser battle battle? See, both Ars Technica and Engadget ran some tests, pitting iPhone 4 on iOS 4 against the Nexus One running Android 2.2 Froyo and the results... varied dramatically to say the least.

Ars SunSpider and V8 benchmarks showed the Nexus One blowing iPhone 4 out of the water with almost double the JavaScript performance. Engadget's real-world test loading real-world webpages, however, had iPhone 4 with a slight lead when Flash was enabled on the Nexus One, and slightly behind when Flash was disabled.

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Apple Updates Mac OS X Safari to 4.0.4 -- Raises Stakes in JavaScript Wars

Apple has just released desktop Safari for Mac and Windows to 4.0.4, which improves full history search performance, has the mandatory stability improvements, and security fixes, but the big news as far as we're concerned is the number one item on the list -- Improved JavaScript performance

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iPhone OS 3.0: Ars Benchmarks Mobile Safari -- 3x - 16x Faster than 2.2

We mentioned yesterday that iPhone OS 3.0's Mobile Safari Browser was being reported as faster than the current iPhone OS 2.2.1 version. Now Ars Technica has run the numbers and the results are pretty impressive. Check out their full report for all the details, but this sums it up nicely:

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iPhone 3.0: Mobile Safari Using Nitro Engine for Ultra-Fast Web Browsing?

We so fondly remember Palm's Roger McNamee stating the Pre would be a million times faster on the web than the iPhone (now retracted), and even our sister-site PreCentral.net jumped on that band wagon, saying the Pre looked to be 4x faster than the iPhone.

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