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A comment on Speedy Android 2.2 hits with tethering, push framework, more. Parent comment

Re:Speedy Android 2.2 hits with tethering, push framework, more by nex3 on Friday May 21, 2010 @10:52PM (#1369653)
The main reason for the speed increase is that Froyo introduces a JIT compiler. This means that the compiler will be able to examine the running code and make optimizations based on its behavior that can outperform statically-compiled native code. Especially for long-running processes (such as apps), this could make Android's Java code run faster than the iPhone's Objective-C.
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Re:Speedy Android 2.2 hits with tethering, push framework, more by alain94040 on Friday May 21, 2010 @11:20PM (#1369698)
I admit that I stopped following compiler research a while back, but I doubt that a JIT compiler would use run-time behavior to beat a static compiler.

Do you have any reference or link to such optimization?

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Re:Speedy Android 2.2 hits with tethering, push framework, more by wmf on Saturday May 22, 2010 @03:12AM (#1369957)
Here are some optimizations that use runtime information:

http://portal.acm.org/citation.cfm?id=346037 http://portal.acm.org/citation.cfm?id=353191

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