Software testing arrived alongside the development of software, which had its beginnings just after the second world war. Computer scientist Tom Kilburn is credited with writing the first piece of software, which debuted on June 21, 1948, at the University of Manchester in England. It performed mathematical calculations using machine code instructions. Show
Debugging was the main testing method at the time and remained so for the next two decades. By the 1980s, development teams looked beyond isolating and fixing software bugs to testing applications in real-world settings. It set the stage for a broader view of testing, which encompassed a quality assurance process that was part of the software development life cycle. “In the 1990s, there was a transition from testing to a more comprehensive process called quality assurance, which covers the entire software development cycle and affects the processes of planning, design, creation and execution of test cases, support for existing test cases and test environments,” says Alexander Yaroshko in his post on the uTest developer site. “Testing had reached a qualitatively new level, which led to the further development of methodologies, the emergence of powerful tools for managing the testing process and test automation tools.” 1 Continuous testing Software testing has traditionally been separated from the rest of development. It is often conducted later in the software development life cycle after the product build or execution stage. A tester may only have a small window to test the code – sometimes just before the application goes to market. If defects are found, there may be little time for recoding or retesting. It is not uncommon to release software on time, but with bugs and fixes needed. Or a testing team may fix errors but miss a release date. Doing test activities earlier in the cycle helps keep the testing effort at the forefront rather than as an afterthought to development. Earlier software tests also mean that defects are less expensive to resolve. Many development teams now use a methodology known as continuous testing. It is part of a DevOps approach – where
development and operations collaborate over the entire product life cycle. The aim is to accelerate software delivery while balancing cost, quality and risk. With this testing technique, teams don’t need to wait for the software to be built before testing starts. They can run tests much earlier in the cycle to discover defects sooner, when they are easier to fix. Skip to main content This browser is no longer supported. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. High CPU usage troubleshooting guidance
In this articleThis article helps you identify the cause of sustained high CPU usage. Keep in mind that you can expect CPU usage to increase as a process or an application serves requests. However, if you consistently see CPU usage remain at a high level (80 percent or greater) for prolonged periods, the performance of your system or application will suffer. For that reason, it's important to understand the cause of sustained high CPU usage to be able to correct the problem, if possible. Task ManagerUse Task Manager to view CPU consumption to help identify the process or application that's causing high CPU usage:
If the process can be stopped, or a related service can be disabled, stop the process or the service. Then, check whether this mitigates the problem. Resource MonitorUse the Resource Monitor to view CPU consumption:
If any of the processes show a higher-than-expected rate of consumption for your environment, consider these top processes first when you try to determine the cause of the problem. Process ExplorerThe Process Explorer tool gives you a complete overview on which processes are currently running on your computer, including details about who invoked the processes, and how much of the total system resources they're consuming. If you want to verify an operating system-related process (for example, System), follow these steps:
Note To get a better stack information result, configure symbols in the Process Explorer. To do this, follow these steps:
Common troubleshooting scenariosThis section introduces the scenarios of different processes that use high CPU usage. Uniquely named singular Microsoft process
Svchost processIf a svchost process consumes high CPU usage, and the svchost process contains more than one service, you need to break each service out to run in its own svchost process to determine which service is causing the high CPU usage. To do so, follow these steps:
Multiple process instances that have the same nameSeveral instances of a process could share the same name. For example, this problem could occur with the explorer.exe processes on a Remote Desktop Protocol (RDP) server. To troubleshoot this problem, follow these steps:
Third-party application processIf a third-process is identified as the cause of the problem, you must contact the application vendor to understand why the respective process is causing high CPU usage on the computer. Data collectionBefore the problem occursYou can use Debug Diagnostic 2.0 version to further troubleshoot this problem. To use the tool, follow these steps.
When the problem occurs
We recommend that you keep the information that you've gathered handy in case you have to contact Microsoft Support. Which of the following Windows tools is used to measure how well software and hardware are performing by displaying statistics in real time?Which of the following Windows tools is used to measure how well software and hardware are performing by displaying statistics in real time? A Microsoft Management Console snap-in that can track activity by hardware and software to measure performance.
When cleaning up the startup process which of these should you do first?When cleaning up the startup process, which of these should you do first? Run System Configuration to see what processes are started. Using the Internet, investigate each of the following startup processes. Identify the process and write a one-sentence description.
What Windows utility can be used to find out what processes are launched at startup?Conclusion. The best windows utility to use in order to find out what processes are launched at startup is the Microsoft Process Explorer.
What is the name of the program that you can enter in the search box to execute event viewer?Use the Command Prompt or Powershell
Here's how you can use the Command Prompt to open the Event Viewer: Press Win + R to open the Run command dialog box. Type CMD and press Ctrl + Shift + Enter to open an elevated Command Prompt. Type eventvwr and press Enter to open the Event Viewer.
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