Apple Looking to Boost Safari JavaScript Performance with New Accelerator Upgrades
Apple is apparently working on significant improvements to JavaScript performance for its Safari browser, as shown by the inclusion of accelerator upgrades in recent builds of WebKit, reports InfoWorld.
WebKit is the open source browser engine created by Apple and which serves as the basis for Safari, and the new upgrades to WebKit's "Nitro" JavaScript engine are known as "FTLJIT". With the upgrades, WebKit's JavaScript engine would become more competitive with Google's V8 and Mozilla's SpiderMonkey engines.
FTLJIT is still considered experimental, so although it's being made available in the OS X port of WebKit by default, it's not actually turned on yet -- it has to be enabled through command-line flags.
One attribute that could make FTLJIT stand out from the pack all the more is how well it runs JavaScript code that is not specifically optimized for [Mozilla's] asm.js. Every JavaScript engine will run asm.js code, but only Mozilla's SpiderMonkey honors asm.js-specific optimizations, and right now no other browser maker has elected to follow Mozilla's lead.
The report notes that speed tests are showing WebKit with FTLJIT enabled outperforming Chrome, while Firefox still tops the charts when using asm.js-optimized benchmark tests.
JavaScript has been a key technology for web browsers for many years, facilitating a variety of user interactions with web pages such as dynamic loading of content without reloading pages and handling page animations and other media. Because JavaScript code embedded on a website is run inside the user's browser when the page is loaded, the efficiency of the browser's JavaScript engine can have a significant impact on the user experience as JavaScript implementations become increasingly complex.
It is unclear whether Apple is targeting OS X 10.10 for these JavaScript improvements, but with them only being enabled in the OS X version of WebKit, it appears that there is still substantial work to be done.
Popular Stories
iOS 18.1 will be released to the public in the coming weeks, and the software update introduces the first Apple Intelligence features for the iPhone. Below, we outline when to expect iOS 18.1 to be released. iOS 18.1: Apple Intelligence Features Here are some of the key Apple Intelligence features in the iOS 18.1 beta so far: A few Siri enhancements, including improved understanding...
Things are firming up for a big Halloween week for Apple, with the company's next operating system updates reportedly coming early in the week and hardware launches coming a few days later. Ahead of those hardware launches, we've recently seen what appears to be one of the most significant physical product leaks in years, while some of the new features in Apple's recent software updates have ...
While the iPhone 16 series was released just a few weeks ago, there are already many rumored features for the iPhone 17 models, and especially for the Pro models. Below, we recap five key new features rumored for the iPhone 17 Pro and Pro Max so far: 24MP front camera for all iPhone 17 models: All four iPhone 17 models will feature an upgraded 24-megapixel front-facing camera, according...
On this week's episode of The MacRumors Show, we discuss the unprecedented leak of Apple's M4 MacBook Pro models and the company's rumored move to more staggered hardware and software releases. Subscribe to The MacRumors Show YouTube channel for more videos Multiple leaks surrounding Apple's unannounced 14-inch MacBook Pro with the M4 chip recently surfaced online. The leaks began with unboxin...
In iOS 18.1, there is a new option to set a "Primary" email address in the Settings app, which means it is easier to change the main email address associated with your Apple Account. The Primary email address is the one that is visible to other people when collaborating on and sharing documents, sending calendar invites, and more. Apple did not previously make it easy to change an Apple...
Apple today stopped signing iOS 18.0, preventing iPhone users who have upgraded to iOS 18.0.1 from downgrading to iOS 18. Apple released iOS 18.0.1 a week ago on October 3. It is not unusual for Apple to stop signing older versions of iOS within a week or two after a new version of iOS is released. When Apple stops signing an update, it can no longer be installed on an iPhone due to a...
Rumors strongly suggest Apple will release the seventh-generation iPad mini in November, nearly three years after the last refresh. Here's a roundup of what we're expecting from the next version of Apple's small form factor tablet, based on the latest rumors and reports. Design and Display The new iPad mini is likely to retain its compact 8.3-inch display and overall design introduced with...
Apple often releases new Macs in the fall, but we are still waiting for official confirmation that the company has similar plans this year. We're approaching the middle of October now, and if Apple plans to announce new Macs before the holidays, recent history suggests it will happen this month. Here's what we know so far. As of writing this, it's been 220 days since Apple released a new...