operating systems concepts silberschatzgalvin 7th edition

... general topic of operating systems and a handful of important concepts (multiprogramming, time sharing, distributed system, and so on). The purpose is to show why operating systems are what they ... platform for operating system research since many different operating systems may run on one physical system 12 Chapter 3 Operating- System. .. must be a global program (the operating ... execute. 1.4 What are the main differences between operating systems for mainframe computers and personal computers? Answer: The design goals of operating systems for those machines are quite different.

Ngày tải lên: 28/06/2014, 00:20

... 20.10 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 2, 2005 Operating Systems Issues Operating Systems Issues  The operating system must guarantee the specific ... request Operating System Concepts – 7th Edition, Jan 2, 2005 20.14 Silberschatz, Galvin and Gagne ©2005 Figure 20.1 Resources on a file server Operating System Concepts – 7th Edition, ... Scheduling Operating System Concepts – 7th Edition, Jan 2, 2005 20.17 Silberschatz,... maintain the status of its connection with the client Operating System Concepts – 7th Edition,

Ngày tải lên: 28/06/2014, 02:20

... Silberschatz−Korth−Sudarshan: Database System Concepts, Fourth Edition II Relational Databases... 750) Silberschatz−Korth−Sudarshan: Database System Concepts, Fourth Edition 204 Chapter 5 II Relational ... Database System Concepts, Fourth Edition 210 Chapter 5 II Relational Databases... language, where queries look like tables QBE and its variants are widely used in database systems on personal ... This call takes several parameters, in- Silberschatz−Korth−Sudarshan: Database System Concepts, Fourth Edition II. Relational Databases 4. SQL 183 © The McGraw−Hill Companies, 2001 4.13 Dynamic

Ngày tải lên: 08/08/2014, 18:22

... System Concepts, Fourth Edition 578 Chapter 15 V Transaction... created or destroyed by the transaction! It can 565 566 Silberschatz−Korth−Sudarshan: Database System Concepts, Fourth Edition ... con- taining the tuple is in the buffer. Silberschatz−Korth−Sudarshan: Database System Concepts, Fourth Edition IV. Data Storage and Querying 14. Query Optimization 550 © The McGraw−Hill Companies, ... fore, most commercial systems include relatively sophisticated optimizers. The bib- liographical notes give references to descriptions of the query optimizers of actual database systems. Silberschatz−Korth−Sudarshan:

Ngày tải lên: 08/08/2014, 18:22

... traditional database systems • Database systems deal with several operations that are not addressed in information-retrieval systems For instance, database systems deal with updates ... less important in information systems Similarly, database systems deal with structured... Silberschatz−Korth−Sudarshan: Database System Concepts, Fourth Edition VII Other Topics © The ... also to buy milk • A person who bought the book Database System Concepts is quite likely also to buy the book Operating System Concepts. Association information can be used in several ways. When

Ngày tải lên: 08/08/2014, 18:22

... 16 1.3 THE OPERATING SYSTEM ZOO 18 1.3.1 Mainframe Operating Systems 18 1.3.2 Server Operating Systems 19 1.3.3 Multiprocessor Operating Systems 19 1.3.4 Personal Computer Operating Systems 19 ... intended for a first course on operating systems, and as such focuses mostly on traditional single-processor systems | I have coauthored two other books on operating systems This leads to two possible ... Practically-onented sequence: 1 Operating Systems Design and Implementation by Tanenbaum and Woodhull 2 Distributed Systems by Tanenbaum and Van Steen Traditional sequence: 1 Modern Operating Systems by Tanenbaum

Ngày tải lên: 09/08/2014, 09:21

... of the work for this specific interrupt type (We assume the operating system is written in C the usual choice for all real operating systems. ) When it has done its Job, possibly making some process ... advantage is that a user-level threads package can be implemented on an operating system that does not support threads All operating systems used to fall into this category and even now some stil] do ... requiring changes to the operating system is unattractive Besides, one of the arguments for user-level threads was precisely that they could run with EXISTING operating systems In addition, changing

Ngày tải lên: 09/08/2014, 09:21

... Ứ⁄ 1⁄2 1 7 Cc C C G Cc 22 B B B 8 Z ⁄Z a A A A 2 22 7 D D D Operating Operating Operating Operating Operating Operating Operating system system system system system system system ... DEADLOCKS If ever there was a subject that was investigated mercilessly during the early days of operating systems, il was deadlocks The reason for this is thut deadlock detection is a nice little graph ... remotely practical in reai systems Its matin function seems to be keeping otherwise unemployed graph theorists off the streets 3.9 SUMMARY Deadlock is a potential problem in any Operating system It

Ngày tải lên: 09/08/2014, 09:21

... on the operating system and the parameters of the call Once it has the printer, the user process makes a system cail telling the operating system to print the string on the printer The operating ... delivered along with the device Stnce each operating system needs its own drivers device manufacturers commonly supply drivers for severa] popular Operating systems Each device driver normally handles ... or another However, since current operating systems expect drivers to run in the kernel, that 1s the modei we will consider here Since the designers of every operating system know that pieces

Ngày tải lên: 09/08/2014, 09:21

... punched card was king, many (mainframe) operating systems based their file systems on files consisting of 80-character records in effect, card images These systems also supported files of 132-character ... managed by the operating system How they are structured, named, accessed, used, protected, and implemented are major topics in operating system design As a whole, that part of the operating system ... executable file (b} An archive 6.1.4 File Access Early operating systems provided only one kind of file access: sequential access In these systems, a process could read ail the bytes or records

Ngày tải lên: 09/08/2014, 09:21

... process scheduling in multimedia systems let us continue our study by looking at multimedia file systems These file systems use a different paradigm than traditional file systems We will first review ... traditional operating systems use We will discuss some of these issues below, first for a single disk, then for multiple disks 7.6.1 Placing a File on a Single Disk Trang 19 482 MULTIMEDIA OPERATING SYSTEMS ... Trang 1 464 MULTIMEDIA OPERATING SYSTEMS CHAP 7 All compression systems require two algorithms: one for compressing the data at the source,

Ngày tải lên: 09/08/2014, 09:21

... algorithms Distributed systems are Joosely coupled systems each of whose nodes is a compiete computer with a complete set of peripherals and its own Operating svs- tem Often these systems are spread ... file systems (Alexandrov et at., 1998: Hartman and Ousterhout 1995: and Thekkath et al 1997} and mobile file systems (Segarra and Andri, 1999) arc also also popular $8.5 SUMMARY Computer systems ... multistage switching network Various operating system configurations are possible, includ- Ing piving cach CPU tts own operating system, having one master Operating sys- tem with the rest being

Ngày tải lên: 09/08/2014, 09:21

... the file systems Most UNIX systems support multipie file systems, including the Berkeley fast file system, log-structured file system, and various System V file systems All of these file systems ... wider vanety of computers than any other operating system It is the dominant operating system on high-end workstations and servers, but it is also used on systems ranging from notebook computers ... unauthorized state For more information, Trang 2 SEC 9.7 TRUSTED SYSTEMS 6357 9.7.3 Multilevel Security Most operating systems allow individual users to determine who may read and write their

Ngày tải lên: 09/08/2014, 09:21

... the host operating system. For example, implementations of a. JVM for the Windows family of operating systems might use the Win32 API when creating Java threads; Linux and Solaris systems might ... the family of Microsoft operating systems (Windows 95, 98, NT, 2000, and XP). Indeed, much of what is mentioned in this section applies to this entire family of operating systems. A Windows XP ... Host Operating System The JVM is typically implemented on top of a host operating system (see Pigure 2.17). This setup allows the JVM to bide the implementation details of the underlying operating

Ngày tải lên: 12/08/2014, 22:21

... loader that understands multiple file systems and multiple operating systems can occupy the boot space. Once loaded, it can boot one of the operating systems available on the disk. The disk ... than the instructions for how to boot a specific operating system. For instance, PCs and other systems can be dual-booted. Multiple operating systems can be installed, on such a system. How ... the operating system to traverse its directory structure, switching among file systems of varying types, seamlessly. 11.2.3 Virtual File Systems The previous section makes it clear that modern operating

Ngày tải lên: 12/08/2014, 22:21

... is one way operating systems can coordinate concurrent output. Another way to deal with concurrent device access is to provide explicit facilities for coordination. Some operating systems (including ... deallocate that device when it is no longer needed. Other operating systems enforce a limit of one open file handle to such a device. Many operating systems provide functions 13.4 Kernel I/O Subsystem ... scheme by examining two influential operating systems? ??UNIX and MULT1CS —to see how these concepts have been implemented there 14.3.2 An Example: UNIX In the UNIX operating system, a domain is associated

Ngày tải lên: 12/08/2014, 22:21

... Solaris, Windows XP, and Linux operating systems. Each of these systems assigns real-time processes the highest scheduling priority. For 19.4 Implementing Real-Time Operating Systems 701 example, Windows ... LynxOS and OnCore Systems are examples of real-time operating systems providing full support for virtual memory. 19.4 Implementing Real-Time Operating Systems Keeping in mind the many possible variations, ... commercial desktop operating systems? ??such as Windows XP—are nonpreemptive. However, to meet the timing requirements of real-time systems? ??in partic- ular, hard real-time systems? ??preemptive

Ngày tải lên: 12/08/2014, 22:21

... [Page 160] We should also mention here that operating systems are not universally loaded from local disks Diskless workstations may load their operating systems from a remote disk, over a network ... real operating systems are commonly written in C (or occasionally C++), but hardly ever in languages like Java C is powerful, efficient, and predictable, characteristics critical for writing operating ... can then obtain the complete operating system If MINIX were loaded this way, very little would need to be changed in the initialization process that occurs once the operating system code is loaded

Ngày tải lên: 12/08/2014, 22:21

... approaches. M01_STAL6329_06_SE_C01.QXD 2/13/08 1:48 PM Page 39 54 CHAPTER 2 / OPERATING SYSTEM OVERVIEW Ease of Evolution of an Operating System A major operating system will evolve over time for a number of reasons: ã ... and the Macintosh operating system did not employ a paging mech- anism because they were run on processors without paging hardware. 1 Subse- quent versions of these operating systems were modified ... book. This part presents the fundamental concepts of computer architecture and operating system internals. ROAD MAP FOR PART ONE Chapter 1 Computer System Overview An operating system mediates among application...

Ngày tải lên: 08/08/2014, 06:20

... of operating systems is how they vary in accomplishing these tasks. Mainframe operating systems are designed primarily to optimize utilization of hardware. Personal computer ( PC) operating systems ... features of an operating system are and what an operating system does for the user. We include coverage of both traditional PC and server operating systems, as well as operating systems for mobile devices. ... archi- tecture, we are ready to talk about operating systems. An operating system provides the environment within which programs are executed. Internally, operating systems vary greatly in their makeup,...

Ngày tải lên: 16/02/2014, 22:58