For additional information about how to use Event Viewer, click the article number below to view the article in the Microsoft Knowledge Base:. Need more help? Expand your skills. Get new features first. Was this information helpful?
Yes No. Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. No jargon. Pictures helped. Didn't match my screen. Also, avoid polling operations because asking repeatedly for information keeps the processor and any other required devices busy, preventing them from 'stepping down' and using less power.
You must make a business decision in concert with the application architects: what are the trade-offs between the cost of having a power-draining task running versus the cost to the end user of shorter battery life? There are a number of tools available now that can help you understand how much power a certain feature is consuming.
Use these tools after the business decisions mentioned in the previous section have been made; for example, there is little point in shutting down the audio capabilities of an application that has a primary function as an audio player! Often the decision is not quite so obvious. Once you have an application with a feature that you can run, you can use the tools to evaluate its power consumption.
The first tool you can use is the Performance Monitor perfmon. Performance Monitor is useful for measuring the overall activity on the system and also the activity of a particular process. Using the.
This way, you can verify if a certain activity is using more or less resources than you expected. The next two tools are produced by Intel. VTune can be used to determine which threads and methods are taking up the most resources. It is often the case that you find an unexpected set of methods that are using resources or keeping the processor busy.
VTune helps you find those methods so you can optimize them based on the current power status of the computer. Intel also produces the Power Evaluation Tool. This is a command line tool that helps you determine the power consumption of your application when it is running on a battery-powered computer.
The Power Evaluation Tool can be used to compare two versions of an application on the same computer. This enables you to try optimizing a particular feature and compare the power consumption with a previous version that has not been optimized. You can also use the Power Evaluation Tool to compare the different behaviors your application exhibits when running in two different power settings.
When you use any of these tools, it is important to consider the length of time for which you run the tests. You get more detailed and accurate information from running longer tests with well-defined workloads activities for your application.
Short tests provide less value. Set up a computer on which you can run the tests for one or two hours and collect the results. This gives you a far better understanding of the power consumption of your application through its lifetime.
The focus so far has been on conserving the battery life while your application is running. There is an additional consideration that you should make: how your application behaves when the computer suspends operation. There are two key scenarios to consider here:. There are some important considerations that you need to make when your application is notified of a suspend request. Your application needs to stop what it is doing as quickly as possible and preserve any state information.
The application should under no circumstances request any user input. There is nothing worse for a user who has closed the lid of his laptop to come back five hours later to a drained battery because an application was waiting for user input.
An example would be if your application displays a message box asking if users wanted to save their documents. Don't ask users anything, save the state of the application and stop any activity that could prevent the computer from entering a suspend state.
Your application also needs to respond to a resume event, reload any saved state, and start any suspended operations. When resuming from a suspend state, the application should appear to the end user as if nothing has happened. The application should do its best to carry on exactly where it left off. Sometimes this is not as easy as it may sound. Please note that this final step is recommended for advanced PC users only. If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach Note: Not recommended for amateur PC users by downloading and replacing your appropriate Computer Management.
Please follow the steps below to download and properly replace you file:. If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows XP. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately. Microsoft typically does not release Windows LNK files for download because they are bundled together inside of a software installer.
The installer's task is to ensure that all correct verifications have been made before installing and placing Computer Management.
An incorrectly installed LNK file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution. You are downloading trial software. Subscription auto-renews at the end of the term Learn more.
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