what is performance matrices in operating system...?? define it's throughput, bandwidth,latency, response time and completion time?
Answers
Explanation:
There are many different metrics that can be used to measure the speed of data transfers throughout a network. Being able to tell the speed of your service provides you with a metric to measure network performance. Throughput and latency are some of the most common ways that networks are measured. Measuring the level of throughput or latency can help to identify performance issues on your network.
However, these concepts aren’t the same thing. In this article, we’re going to look at the difference between latency and throughput and how they can be used to measure what is going on. Before we do that, we’re going to define what latency and throughput are.
Answer:
Explanation:
Performance metrices in operating system.
Operating system, SQL Server, and database performance are all monitored as part of effective SQL Server performance management. We provided monitoring tools for the latter two performance measures in How to monitor your SQL Server instances and databases.
Monitoring the performance of the three groups stated above gives a comprehensive view of the system's health and essential data for identifying performance issues and bottlenecks. Metrics of operating system performance are linked to processor, memory, disc, and network performance. The available memory, average bytes per read/write, average read/write time, disc reads/writes per second, network utilisation, pages input per second, pages per second, processor queue length, and processor utilisation are some of the most crucial system performance measures.
The monitoring objectives and performance specifications will determine the metrics that will be used. A DBA must be able to increase performance based on monitoring data, as well as spot possible problems and bottlenecks early on and resolve them before they have an impact on the system.
Throughput:
- Throughput is a measure of how many units of information a system can process in a given amount of time. It is applied broadly to systems ranging from various aspects of computer and network systems to organizations.
Bandwidth:
- It's a measure of how much data can be sent and received at a time. Bandwidth is measured in bits, megabits, or gigabits per second. It's important to know bandwidth doesn't actually increase the speed of a network, it just appears to make the network faster.
Latency:
- Latency can be thought of as the time it takes to perform an action, while throughput can be thought of as the number of actions that can be executed in one unit of time. In other words, latency measures how quickly data takes to be transferred, while throughput is how much data can be sent.
Response time and completion time:
- Response time is the total amount of time it takes to respond to a request for service. That service can be anything from a memory fetch, to a disk IO, to a complex database query, or loading a full web page. Ignoring transmission time for a moment, the response time is the sum of the service time and wait time.
- Time to completion (TTC) is a calculated amount of time required for any particular task to be completed. Completion is defined by the span from "conceptualization to fruition (delivery)", and is not iterative. Similar to the metaphorical use of estimated time of arrival.
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