查询词典 disk memory

A group of researchers in Princeton University have managed to prove and demonstrate that disk encryption mechanism used by BitLocker of Windows Vista; FileVault of MacOS X; dm-crypt of Linux, TrueCrypt and possibly other secure encryption software, can be cracked, hacked and defeated by imaging state of physical memory which still carry and retain traces of code bits, in what hackers called cold boot attack by dumping all data in memory to disk.

一组研究人员在美国普林斯顿大学已成功地证明，表明磁盘加密机制，利用BitLocker的Windows Vista的； FileVault的MacOS下；德国马克，隐窝的Linux ， TrueCrypt ，可能还有其他安全的加密软件，可以被破解，黑客入侵并打败由成像状态的物理内存，其中仍保留痕迹的代码位，在什么所谓的黑客攻击冷启动倾倒所有的数据在内存到磁盘。

Memory access speed is much higher than the disk, if the memory read and write as a disk cache can effectively improve the efficiency of system operation.

内存的读写速度比磁盘高得多，如果将内存作为磁盘读写的高速缓存可以有效提高系统运行效率。

In terms of memory hierarchy, we investigated how to improve the cache hit rate and localize data according to the characteristics of cache, master memory, local disk and remote disk in cluster systems. As for communication, features of cluster systems and different cluster internal networks are examined. Two popular parallel programming models - message passing model and share memory model - are analyzed in terms of how do they affect the cluster performance and how can we improve the cluster performance.

在处理器层面，分析了现代处理器中常用的一些技术，包括超线程技术、超长指令技术和NUMA架构等，对不同特点的程序的性能影响和如何充分利用处理器中的一些技术提升性能；在存储层次上，结合机群系统上Cache、主存、本地辅存及网络存储的存储层次的特点，分析了数据局部性、Cache命中率等对性能的影响以及提出如何提高数据局部性；通讯系统层面分析了不同机群通讯系统及不同机群通讯网络的特点；在编程模式方面，分析和比较了目前最常用两种并行编程模式--消息传递编程模式和共享存储编程模式，在机群系统上对性能的影响因子以及提出如何提高性能的方法。

In this system, we introduces cluster architecture to provide global and scalable streaming caching proxy service mechanism; We implement streaming media transfer protocol on caching proxy end; We implement layered caching mechanism (global disk caching and memory caching) using dynamic sharing running memory buffer algorithm to support more stable and real-time parallel streams; We implement client request aggregation by means of streaming session sharing to reduce disk I/O and serve more user; We propose single streaming image to support the unify of pre-fetching streaming and caching streaming, which guarantees the proxy streaming of transparency for client; We design and implement streaming pre-fetching mechanism based on packet feedback information to reduce the number of "rebuffering" on client end; We bring forward streaming caching admission control policy fit for streaming caching proxy server to guarantee the QoS of streaming service.

该系统引入集群架构以提供全局的、可扩展的缓存代理服务机制；实现了缓存代理端的流媒体传输协议；采用动态共享运行缓冲区算法实现了分层缓存机制(全局磁盘缓存和内存缓存)以支持更多稳定、实时的并发流；利用流会话共享机制实现了客户请求聚集，从而减少磁盘I/O同时能服务更多的客户；提出了单一流映像，以支持预取流和缓存流的统一，从而保证代理端服务流对客户的完全透明；设计并实现了基于包反馈信息的流数据预取机制，从而减少了客户端的"rebuffering"次数；提出了适合于缓存代理服务器的流缓存准入控制策略，保证了流服务的QoS。

Embedded systems are usually diskless systems. In order to keep permanent data in the systems, it is a widely adapted strategy to use flash memory disk as its disk system, therefore how to build a flash memory file system is the focus of this thesis in a reasonable embedded system.

嵌入式系统通常是无磁盘系统，为了让嵌入式系统能够永久性保存资料，使用Flash 存储器是一种普遍的策略，那么如何在嵌入式系统环境中建立Flash 存储器文件系统就成为了本文研究和解决的重要问题。

As the root user, when you use the format utility and select a disk to partition, a copy of the disk's partition table is read from the label on the disk into memory and is displayed as the current disk partition table.

当你使用format命令时，format将读取这个文件(/etc/format.dat )。这个文件是一个可用磁盘类型的表和一个预先定义的分区表的集合，你能用它来快速分区磁盘。

The operating system uses a portion of the hard disk as virtual memory,swapping data and instructions beween the hard disk and physical memory.

物理内存用于储存诸如操作系统、视频数据及计算机用于运行程序的指令和数据之类的内容。

There is provided a hard disk drive power reduction module. A data storage system for a computer including low power and high power modes, comprising low power nonvolatile memory; high power nonvolatile memory; and a drive power reduction module that communicates with said LP and HP nonvolatile memory, wherein when read data is read from said HP nonvolatile memory during said low power mode and said read data includes a sequential access data file, said drive power reduction module calculates a burst period for transfers of segments of said read data from said HP nonvolatile memory to LP nonvolatile memory.

本发明提供一种数据存储系统，其用于具有高功率和低功率模式的计算机，所述数据存储系统包括：低功率LP永久性存储器；高功率HP永久性存储器；和与所述低功率和高功率永久性存储器通信的驱动功率减少模块，其中，在所述低功率模式期间当从高功率永久性存储器读取读数据时，且所述读数据包括顺序存取数据文件，所述驱动功率减少模块计算一个突发周期，用于把所述读数据片断从所述HP永久性存储器传送到所述LP永久性存储器。

To imagine such a situation, when you more than the amount of memory, and run a relatively large-scale process, will inevitably lead to a sharp reduction in the number of physical memory, and in this case the so-called "optimization software," the beginning of smart aleck, the data memory for paging to the hard drive, and the procedures needed for the operation of the data, which may have led to at the same time, the "optimization of software" tried to data paging to the hard disk, and the operating system attempts to read data from the hard disk into memory, a very large increase in hard drive read and write.

想象这种情况，当你内存数量不多，而又运行了比较大型的程序后，必然导致物理内存数急剧减少，而在这种情况下所谓的"优化软件"开始自作聪明，把占用内存的数据往硬盘上进行分页，而程序的运行需要这些数据，这可能导致了在同一时间内，"优化软件"试图将数据分页到硬盘，而操作系统试图将数据从硬盘读取到内存，极大增加了硬盘的读写。

Read and write of flash disk as USB host.According to the request of this subject, the system hardware and software for the slave device, and the communication interface to the master PC are developed. Detailed works are as follows: in order to implement the measurement principle in the system, flow-liquid levelmethod is used;velocity of flow is measured through rotor Kinemometer;water level is surveyedvia RS485 interface and pressure sensor;the C8051F060 chip which is in high performance andintegration, produced by Silicon Laboratories Company as master chip is used to capture and measure the width of impulses, so singals of flow velocity are collected and disposed;the 4×4 matrix keyboard and LCD are used in the part of man-machine interface which are easy to input, legible to read, various to display, comfy to be accepted and plain to show measure and inquiry results;FRAM memory FM3164 is used to carry out the non-volatile memory of data and accurate real-time clock.;SL811HST chip is used as USB host which can read and write flash disk,thereby a kind of adscititious mass storage is accomplished .

根据研制任务的要求，课题期间主要完成了下位机系统硬件和软件，设计了与上位机的通讯界面，所做的具体工作包括：测量原理在系统中的实现，采用了流速—水位计算法，通过旋桨式流速仪来测量流速，通过RS485接口与压力变送器通讯测量水位；主控制芯片采用了Silicon Laboratories公司的高性能、高集成度C8051F060芯片，利用其捕捉测脉宽的特性，实现了流速信号的采集和处理；人机接口部分采用了4×4矩阵键盘和LCD显示，输入方便，读数清晰，显示多样化，信息量大，易于被用户接受，更直观地显示测量及查询结果；通过采用铁电存储器FM3164实现了数据的非易失性存储和精确的实时时钟；通过采用SL811HST芯片，实现了USB主机的功能，可读写U盘，从而实现了单片机的外挂式海量存储。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。