TAILIEUCHUNG - The DiskSim Simulation Environment Version 3.0 Reference Manual

Accordingly, the ambitious group demands transparent, criteria-based and reduced use of Green Box payments, while the cautious party intends to develop the Green Box as a flexible tool with which negative domestic non-trade effects of trade liberalization can be buffered and absorbed. The special consideration group also asserts such flexibility, but only for their particular domestic concerns such as food security and rural development, as well as reducing disparity in levels of domestic support among countries and easing the harm caused by developed country trade distortion. The cautious camp also asserts rural development as a non-trade concerns applying to all countries, but most other Members are rejecting. | The DiskSim Simulation Environment Version Reference Manual John S. Bucy Gregory R. Ganger and Contributors January 2003 CMU-CS-03-102 School of Computer Science Carnegie Mellon University Pittsburgh PA 15213 Abstract DiskSim is an efficient accurate and highly-configurable disk system simulator developed to support research into various aspects of storage subsystem architecture. It includes modules that simulate disks intermediate controllers buses device drivers request schedulers disk block caches and disk array data organizations. In particular the disk drive module simulates modern disk drives in great detail and has been carefully validated against several production disks with accuracy that exceeds any previously reported simulator . This manual describes how to configure and use DiskSim which has been made publicly available with the hope of advancing the state-of-the-art in disk system performance evaluation in the research community. The manual also briefly describes DiskSim s internal structure and various validation results. i Contents Contents i 1 Introduction 1 What DiskSim Does . 1 What DiskSim Does Not Do. 1 Limitations and Advantages of Version . 2 Diskmodel. 2 Libparam . 2 Known Bugs . 2 Organization of Manual. 2 Contributors . 2 2 Running DiskSim 3 Parameter Overrides . 3 Example Command Line . 4 3 The Parameter File 5 Global Block. 5 Stats Block. 6 Bus Statistics. 6 Controller Statistics. 6 Device Statistics. 7 iodriver Statistics. 7 Process-flow Statistics. 7 iosim Block. 7 I O Subsystem Component Specifications. 8 Device Drivers. 8 Buses. 9 Controllers . 10 Storage Devices . 10 Disks . 11 Simple Disks . 18 Queue Scheduler Subcomponents . 19 Disk Block Cache Subcomponents. 20 Memory Caches . 22 Cache Devices . 23 Component Instantiation . 24 I O Subsystem Interconnection .

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