Computer Systems Architecture and Administration Assignment

Computer Systems Architecture and Administration - Assignment Example There are three mechanisms to the performance of processing interrupts. The leading element is the amount of time taken between when the processor receives an interrupt request and when the processor takes action to initiate processing the interrupt service routine. This interruption is referred to as interrupt latency. The second element of interrupt is the interrupt processing time. It denotes the amount of time that the processor spends when practically saving the machine state of the interrupted task and diverting the interrupt service routine execution. Usually the amount of machine state saved is minimal, on the presumption that the interrupt service. The last element of interrupt service performance is the state saving overhead. This underlines the amount of time consumed when saving machine registers, but which must be saved so that the interrupt service routine to do its job. c. Caching is beneficial in several ways including: latency is abridged for active data resulting in higher application performance levels. Further, the I/O operations to external storage are minimized because most the I/O is diverted to cache. Subsequently this leads to lower levels of SAN traffic and disagreement. a. For a program to be executed it is required that it be first stored in main memory. Subsequently, after the program is loaded in the memory, a program execution starts through the delivery its start address to the CPU, which then sends instruction address to the memory unit.

Depending on your choice; Either Organisational culture OR Leadership Essay

Depending on your choice; Either Organisational culture OR Leadership - Essay Example (HP) managed to become the biggest global seller of PC with a total of 49,434 shipments and 18.2% market share back in 2007 (Pettey, 2008). It line with this, the company offers a wide-range of products and services related to digital photography and entertainment as well as computer related products such as PC, laptops, and printers for personal and business use aside from large IT storage, servers, and software. (HP, 2008a) For this study, organizational culture of Tesco and HP will be identified and examined followed by determining which among the two organizations have a stronger organizational control. In the process of going through the main discussion, its respective managers’ approach to control organizational culture will be tackled in details. Organizational culture is â€Å"a set of norms, beliefs, principles and behaviour that gives the organization a unique character† (Brown, 1995). Once a company has formed a positive cultural practice within a business organization, there is a higher chance for the company to cope with internal and external business challenges. For instance: Setting a positive perception about organizational change on employees can make it easier for a business to deal with a wide-range of business challenges which contributes to the increase in the company’s annual revenues and profitability. Likewise, setting a positive organizational culture can help the managers create a more conducive working environment which could significantly increase the work performance of its employees (Armstrong, 2007). When it comes to setting organizational culture, Tesco considers not only the welfare of its loyal and prospective customers but also its existing employees. As part of improving its customer services in each of the Tesco stores, the company make it a habit to increase the number of its staff to help out in addressing the main concerns of its customers (Tesco, 2009a). On the other hand, HR management of