That, in the end what is big.LITTLE, how it is to work it?
To let everyone know big.LITTLE, ARM specially recorded a video, and easy for us to do to explain, and two people representing big.LITTLE architecture "role", tall, strapping man is big, is petite LITTLE.
Mr Mr Big mainly deal with the challenging task, Ms. Little is responsible for small tasks. We this analogy, the clean-up time, the boys responsible for carrying water, carrying a table lift chair, female students in charge of sweeping clean the blackboard. When the phone does not need to work, Big LITTLE core and core can stop and rest.
Big.LITTLE technology based on eight-core processor, and not the traditional cores on a single processor, but split into two, one of which uses four "small core", and the other uses the 4 " big heart, "two" core "has its own independent speed and performance. Through two core autonomous operation, equipped Big.little processor technology more efficient than previous mobile CPU, which after all is only one or two cores.
When you need to open a web page with a smart phone, the phone can use a large core to handle the task, and the small kernel is small at the same time to deal with other tasks, such as checking e-mail, make phone calls.
ARM explained, big.LITTLE is an energy-saving and consumption technology, ARM CPU core with the highest performance and most efficient ARM CPU core combined with lower power consumption can provide the best performance, the fastest processing tasks speed.
big.LITTLE software platform can save 75% of the CPU power consumption, while increasing performance by 40% in terms of the thread load.
Task processing performance required according to the task, big.LITTLE software and big.LITTLE MP automatically and seamlessly transferred to the appropriate workload CPU core.ARM big.LITTLE technology taking into account the best performance and lowest power consumption, reduce the phone's power consumption.
Smart phones and tablet PCs increasingly high performance requirements, at the same time, the slow development of battery technology. People want the phone or tablet with a high enough performance, processing tasks fast enough, but you also want the device's battery life longer.Conventional processor technology has been unable to meet the demand of users, and therefore had to design innovative ARM big.LITTLE size structure.
big.LITTLE ARM is one of the many power system management technology, which with the dynamic voltage and frequency scaling (DVFS), clock gating and temperature management coordination, full control of the on-chip processor power.
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