Two-time gains proizoditelnosti Android
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The engineers from the consortium Linaro , established companies, ARM, Freescale, IBM, Samsung, ST-Ericsson and Texas Instruments to improve support for the ARM architecture in Linux and open a variety of applications, conducted to optimize performance of 4 Android (Ice Cream Sandwich). Report on completed improvements posted on YouTube in the form of a video that demonstrates the optimized and unoptimized OS for smartphones on an identical set of equipment – a system based on the SoC Texas Instruments PandaBoards (OMAP4430).
In both cases, the hardware, and software version of Android for measuring performance (oxBench) are identical. According to the results of testing with the version of Android optimizations shows 60 frames per second, whereas the original version only 30. To measure was chosen as a test that rests in the processor, for the optimization of the graphics is not possible due to the closed drivers for graphics accelerator.
Speed was achieved by introducing into the components of the Android platform-specific optimizations for the ARM and the use of newer versions of software to build (GCC 4.7) in combination with the more aggressive options for the compiler (Off-fno-strict-aliasing, and the inclusion-O3).