Papers by Keyword: Garbage Collection

Abstract: There may be exist multiple applications in the Java Smart Card, JCVM need to allocate memory space for each object during its running. As the restriction of the physical size of the Java Smart Card itself, the capability of the memory is usually small. It is very necessity to how to use efficiently the limitation resource. In order to solve this problem, In this paper, we will analyze the strategy of memory allocation. Considering the uses of the Java Smart Card, we will be analyzing several memory recovery algorithm, then determine the garbage, and design a kind of method of JCVM garbage collection, which can guarantee meet users tolerable time when trading.

Abstract: Due to its advantages, such as shock resistance, low power consumption, and so on, solid state drives are considered as a next generation storage device. And write amplification is a very import system parameter for evaluating performance. To simplify the analytical model of write amplification for solid state drives adopting page-level address translation mechanism, this paper proposes a probability model. Furthermore, numerical results based on our proposed probability model are also obtained. This paper can pose as a guideline for a first-order estimation of the write amplification for parameter ranges in solid state drives taking page mapping scheme.

Abstract: As networks and the development of information technology, the traditional machinery hard in some areas has been unable to satisfy the speed and performance requirements, and appeared SSD（solid state disk）. This article describes the design of a high-performance SSD control chip,the SSD control chip intergrate internal ARM7 processor, by AHB bus to rapid implement the dma data transmission, the interface with nandflash adopted eight, which can achieve on the parallel operation and improve nandflash interface speed. With the host interface uses sata2.Firmware use of the FTL algorithms, including and of the operation of the mapping. A balanced mix of wear and tear, a bad piece of management and garbage collection, and more efficient to access to SSD, improved ssd life. That the SSD chip for reading speed 200MB/S, the maximum writing speed is 140MB/s.