Computer performance is the quantity of tasks carries out bythe computer system.
It doesn’t depend on the single component. It takes anumber of components working mutually to figure computer’s inclusive performance.It explains that how well and quickly all the components deal with each otherto complete the given tasks together as a whole. Performance parameters are themetrics which are used to measure the activities and performances of thesystem. In high performing computer, there should be some characteristics suchas short response time for the process a given instruction, high throughput,high availability, high bandwidth, short data transmission time, short accesstime for Random Access Memory, etc.
Those parameters can affect the computer interms of processing and storage 1. Furthermore Focusing on computer memorysystem, performance is one of the most important characteristics and there arethree main performance parameters that can be used; access time, Memory cycletime and Transfer rate 2.Access time, also known as latency is the time gap betweenentering an address or instruction to the memory by user and stores the dataand make available for use by RAM. In another word it is the time that RAM takesto perform a read or write operation 1.
Similarly, Response time is the totalamount of time it takes to respond to a request. It contains three differenttime periods.i.
Wait time- time that instruction take to be in the queuebefore it processii. Service time- time that takes to complete the taskiii. Transmission time- time that take to transfer theinstruction from user to the system and response back to the user.Moreover, the concept ofMemory Cycle time is access time plus any additional time it takes to transmissionor to recreate the data and it is concerned with the system bus 2.Transfer rate is another important parameter which canmeasure how fast your computer can process data and instructions. It definesthe number of bits that can be transferred into or out of a memory unit persecond. In Random access memory, transfer rate is the conjugate of the cycletime (transfer rate=1/cycle time) and in non-random access memory, followingformula explains the relationship between access time and transfer rate.Average time to read or write n bits = Average access time +(Number of bits)/(Transfer rate) 2