Registry optimization network
Step 1, run "regedit" to open "Registry Manager"; Then, find the HKEY _ local _ machine \ system \ current control set \ service \ tcpip \ parameter according to the following path.
Step 2: Right-click the corresponding blank on the right side of the Parameters subitem, select New →"DWORD Value, and name it DefaultTTL. Then, click the right mouse button, select Modify, and modify its value to 80 (hexadecimal) or 128 (decimal) in the pop-up window.
Step 3: Create the following DWORD values in turn and modify their values (if there are two values, the former is hexadecimal and the latter is decimal):
" EnablePMTUBHDetect"="0 "
" EnablePMTUDiscovery"=" 1 "
"globalmaxtcpwindowsize" = "7fff" or "32767"
" TcpMaxDupAcks"="2 "
" SackOpts"=" 1 "
" Tcp 1323Opts"=" 1 "
"TCP window size" = "7FFF "or" 32767" (93440 or 186880 or 372300).
Ok, restart the computer and enjoy broadband. Same system, different enjoyment.
In the process of using XP, with the passage of time, the running speed of the system will become slower and slower. Some friends may think of reinstalling the system, but after reinstalling, so many applications will be reinstalled. How to improve the running speed of XP without installing the system? As long as you follow the following nine aspects, I believe your XP will run at a high speed again.
1, speed up switching.
When shutting down in Windows XP, the system will send messages to running programs and remote servers, telling them that the system should be shut down, and wait for a response before the system starts to shut down. To speed up the startup, you can set the task to end automatically first. First, find HKEY _ Current _ User \ Control Panel \ Desktop, and set the key value of AutoEndTasks to 1. Then there is a "HungAppTimeout" under this branch, and its value is changed to "4000 (or below), and the default is 50000; Finally, find HKEY _ local _ machine \ system \ current control set \ control, and also set WaitToKillServiceTimeout to "4000"; Setting the shutdown speed in this way is obviously much faster.
2, improve the broadband speed
Windows XP Professional Edition reserves 20% bandwidth by default, which has no effect on our individual users. It is better to make full use of it than to leave it idle.
Enter gpedit.msc in Start → Run to open the Group Policy Editor. Find "Computer Configuration → Management Template → Network →QoS Packet Scheduler", select "Restrict Reserved Bandwidth" on the right, select "Properties" to open the dialog box of Restrict Reserved Bandwidth, and select "Enable" to change the original "20" to "0" to release the reserved bandwidth.
3. Optimize online neighbors
When using Windows XP, the system will search its own * * * shared directory, which can be used as a printer for the network * *, as well as the planned tasks related to the network, and then it will be displayed, which will obviously be much slower. These functions can be deleted if they are of little use to us. Find the current version of HKEY _ local _ machinewareMicrosoft Windows Explorer Remote Media Space in the registry editor, delete (printer) and its {D6277990-4C6A-1F8D87-00060F5 BF}, restart the computer and access the Internet again.
4. accelerate the start.
Speed up the startup of Windows XP. You can do this by modifying the registry, clicking Start-Run in turn, and entering "Regedit" in the run dialog box to open the registry editor. , find the \ HKEY _ local _ machine \ system \ currentcontrolset \ control \ SessionManager \ memory management \ prefetch parameter, find the EnablePrefetcher primary key on the right, and change its default value of 3 to 1, so that the scrolling time of the scroll bar will be reduced;
5. Automatically close the stop response program.
Sometimes XP will prompt you that a program stops responding, which is very annoying. We can close the registry by modifying it, click Start-Run in turn, and enter "Regedit" in the run dialog box to open the registry editor. HKEY _ Current _ User \ Control Panel \ Desktop, change the data with numeric key value of AutoEndTasks to 1, and then log off or restart.
6. Speed up the menu display.
In order to speed up the menu display, we can set it as follows: We can find the "MenuShowDelay" primary key under HKEY _ Current _ User \ Control Panel \ Desktop and change its value to "0" to speed up the menu display.
7. Clear the unused DLL files in the memory.
Click Start-Run in turn, and enter "Regedit" in the Run dialog box to open the Registry Editor. Hkkey _ local _ machinesoftwindows current version, add an AlwaysUnloadDLL in Explorer, and the default value is set to 1. Note: If the default value is set to 0, this function will be disabled.
8. Reduce the number of projects loaded at startup.
Many applications will join the system startup group when they are installed, and the system will run automatically every time it is started, which not only prolongs the startup time, but also consumes system resources after the startup is completed!
Start the system configuration utility, and list the projects and sources loaded when the system starts in the "Start" project. Check carefully whether it needs to load automatically, otherwise clear the check box in front of the item. The fewer projects you load, the faster you start. The project needs to be restarted to take effect.