You should evaluate the impact of this setting before applying it. The default is 0, disabling SMB Signing.
SMB signing can increase CPU cost and network round trips, but helps block man-in-the-middle attacks. If SMB signing is not required, ensure that this registry value is 0 on all clients and servers. The default is 64, with a valid range of 1 to This value is used to determine the amount of file metadata that can be cached by the client.
Increasing the value can reduce network traffic and increase performance when a large number of files are accessed. The default is 16, with a valid range of 1 to This value is used to determine the amount of directory information that can be cached by the client. Increasing the value can reduce network traffic and increase performance when large directories are accessed.
The default is , with a valid range of 1 to This value is used to determine the amount of file name information that can be cached by the client. Increasing the value can reduce network traffic and increase performance when a large number of file names are accessed. The default is This parameter limits the number of outstanding requests on a session.
Increasing the value can use more memory, but it can improve performance by enabling a deeper request pipeline. Increasing the value in conjunction with MaxMpxCt can also eliminate errors that are encountered due to large numbers of outstanding long-term file requests, such as FindFirstChangeNotification calls. This parameter does not affect connections with SMB 2.
This parameter specifies the maximum number of files that should be left open on a shared resource after the application has closed the file.
The general tuning parameters for client computers can optimize a computer for accessing remote file shares, particularly over some high-latency networks such as branch offices, cross-datacenter communication, home offices, and mobile broadband.
The settings are not optimal or appropriate on all computers. You should evaluate the impact of individual settings before applying them.
The following sections describe ways to tune some specific processor power management parameters to meet goals not addressed by the three built-in plans. If you need to understand a wider array of power parameters, see Powercfg command-line options.
HWP is a new capability for a cooperative hardware and software performance control. OS is no longer required to monitor activity and select frequency at regular intervals. Switching to HWP has several benefits:. Windows can still set the minimum and maximum processor states to limit the range of frequencies that the processors can execute.
It can also set the following Processor energy performance preference policy EPP parameter to indicate HWP to favor power or performance. The following commands decrease the EPP value to 0 on current power plan to totally favor performance over power:. Processors change between performance states P-states very quickly to match supply to demand, delivering performance where necessary and saving energy when possible.
If your server has specific high-performance or minimum-power-consumption requirements, you might consider configuring the Minimum Processor Performance State parameter or the Maximum Processor Performance State parameter.
The values for the Minimum Processor Performance State and Maximum Processor Performance State parameters are expressed as a percentage of maximum processor frequency, with a value in the range 0 — If your server requires ultra-low latency, invariant CPU frequency e. For such a server, you can cap the minimum processor performance state at percent by using the following commands:. If your server requires lower energy consumption, you might want to cap the processor performance state at a percentage of maximum.
For example, you can restrict the processor to 75 percent of its maximum frequency by using the following commands:. Capping processor performance at a percentage of maximum requires processor support. The CPU utilization-based power management algorithms typically uses a average CPU utilization within a time check window to determine if frequency needs to increase or decrease.
As a result, power management will choose a low frequency for this processor. This issue exists on HWP-based power management as well. The DPCs and threads handling the IO completion or network packets are in the critical path and should not run at low speed.
When the DPC count is above certain threshold in the past monitoring window, PPM will enter an IO responsiveness period and raises the frequency floor to a higher level. The frequency floor will be reset when the DPC count is low enough for some time. The behavior can be tuned by the following parameters.
For example, if your server workload is not sensitive to the latency and wants to loose the responsiveness override to favor power, you can increase the Processor responsiveness override enable threshold and Processor responsiveness override enable time, decrease the Processor responsiveness override disable threshold and Processor responsiveness override disable time.
Then the system will be hard to enter responsiveness override state. The default value of Processor responsiveness override performance floor is set as so that the responsiveness override period will run at maximum frequency.
You can also decrease the processor performance floor and reduce the Processor responsiveness override energy performance preference ceiling to let HWP to adjust the frequency. The following are the sample commands to set the parameters for current active power plan.
However, this feature increases CPU core energy consumption, so Windows Server configures Turbo technologies based on the power policy that is in use and the specific processor implementation. For Balanced power plans on systems that rely on traditional P-state-based frequency management, Turbo is enabled by default only if the platform supports the EPB register.
To enable or disable the Turbo Boost feature, the Processor Performance Boost Mode parameter must be configured by the administrator or by the default parameter settings for the chosen power plan. Processor Performance Boost Mode has five allowable values, as shown in Table 5. For P-state-based control, the choices are Disabled, Enabled Turbo is available to the hardware whenever nominal performance is requested , and Efficient Turbo is available only if the EPB register is implemented.
You must run the powercfg -setactive command to enable the new settings. You do not need to reboot the server. Replace "scheme current" in the powercfg -setactive commands previously shown with the desired alias to enable that power plan.
For example, to adjust the Boost Mode in the Power Saver plan and make that Power Saver is the current plan, run the following commands:.
The speed at which a processor performance state increases or decreases is controlled by multiple parameters. The following four parameters have the most visible impact:.
Processor Performance Increase Threshold defines the utilization value above which a processor's performance state will increase. Larger values slow the rate of increase for the performance state in response to increased activities. Processor Performance Decrease Threshold defines the utilization value below which a processor's performance state will decrease.
Larger values increase the rate of decrease for the performance state during idle periods. Processor Performance Increase Policy and Processor Performance Decrease Policy determine which performance state should be set when a change happens. For example, if your server requires ultra-low latency while still wanting to benefit from low power during idle periods, you could quicken the performance state increase for any increase in load and slow the decrease when load goes down.
The following commands set the increase policy to "Rocket" for a faster state increase, and set the decrease policy to "Single". The increase and decrease thresholds are set to 10 and 8 respectively. To try to find out the name of the program, point to the icon with your mouse pointer.
Even after you check the notification area, you might still miss some programs that run automatically at startup. To stop a program from starting automatically. Open Startup Apps settings. In the Startup Apps area, find the program you want to stop from starting automatically and set it to Off. Note: If you turn off a program and it continues to start automatically when Windows starts, you should scan for viruses and malware.
See the next section for more info. A virus, malware, or malicious software could cause your PC to run slowly. Other symptoms include unexpected pop-up messages, programs that unexpectedly start automatically, or the sound of your hard disk constantly working. The best way to handle viruses and malicious software is to try to prevent them by running antimalware and antivirus software and keeping it up to date.
However, even if you take precautions, your PC can still become infected. For more info, see How to protect your Windows PC. If they are, choose the one you want to run, and then disable or uninstall any others. If you have another antivirus program installed and turned on, Windows Security will be turned off by default.
To scan for viruses using Windows Security. Open Windows Security settings. On the Protection updates screen, select Check for updates to make sure you have the most recent updates. Wait for Windows Security to finish scanning for viruses and malware. Run the recommended advanced scan. This scan takes longer but searches more extensively for threats on your PC.
If no viruses are found, restart your PC and try to reproduce the performance problem you were having with your PC. To scan for malware and viruses with Microsoft Defender Offline. The scan might take 15 minutes or so, and your PC will restart again after that. Restoring your PC undoes recent changes that might be causing problems. If you think a recently installed app, driver, or update for Windows could be causing problems, you might get things running normally again by restoring your PC to an earlier point, called a restore point.
Select Search on the taskbar, type advanced system , then select View advanced system settings from the list of results. On the System Protection tab, select System Restore. Select Recommended restore to go with the most recent restore point Windows has made automatically, or Choose a different restore point to select one yourself, then select Next. If you chose to select a different restore point, select one, then select Next.
Either way, select Finish to begin restoring. In the search box on the taskbar, type create a restore point , then select Create a restore point from the list of results. On the System Protection tab, select Configure. One of the best ways to get the most out of your PC is to make sure you have the latest version of Windows 10 installed.
Sometimes apps that were made for an earlier version of Windows will still run on Windows 10, but they might slow down your PC. In the search box on the taskbar, type troubleshoot , then select Troubleshoot settings , which has System settings listed underneath it. Select File Explorer from the taskbar.
In the search box on the taskbar, type advanced system , and then select View advanced system settings , which has Control panel listed underneath it. In the Temporary Files area, select Delete temporary files that my apps aren't using.
Select which files you want Storage Sense to delete your choices are files in your Recycle Bin and in your Downloads folder , then select the corresponding time intervals. Windows will take a few moment to clean up your files, and then you'll see a message indicating how much disk space has been freed up. In the search box on the taskbar, type disk cleanup , then select Disk Cleanup from the list of results.
When you find an app to remove, choose it from the list and select Uninstall. Get more info about freeing drive space in Windows Windows 10 includes many visual effects, such as animations and shadow effects. In the search box on the taskbar, type performance , then select Adjust the appearance and performance of Windows in the list of results.
This can help improve PC performance if you reduce the number of files that are synced to your PC. Open About settings. Notification area with mouse pointing to show hidden icons.
If you turn off a program and it continues to start automatically when Windows starts, you should scan for viruses and malware. To use the procedure above to stop a program from starting automatically, you need to have Windows 10 Version or higher installed.
For more info, see How to protect your Windows 10 PC. To scan for viruses using Windows Security Windows 10 Version or later. Wait for Windows Defender Security Center to finish scanning for viruses and malware. In the search box on the taskbar, type restore point , then select Create a restore point from the list of results. Select Next , then choose the restore point related to the app, driver, or update that might be causing the problem. Windows 11 Windows 10 More Make sure you have the latest updates for Windows and device drivers.
0コメント