What is the use rate of PF?

In Windows Task Manager, there is a "PF usage" in performance items, and many netizens do not know what it means, and the following is a small series of one by one.

Pf:page file, pagefile (virtual memory)

PF Usage: Value of the amount of space that virtual memory has already used

Because it is the value of the space that is already in use, you will not have much effect on this value if you plug in more memory. This usage is not about the efficiency of memory usage, but about how much memory is occupied, so it's not as high as it is.

CPU usage and PF usage are proportional to the CPU configuration of your computer and the size of the memory strip to system performance. CPU usage is too high to indicate that your system overhead is too large (XP SP2) or your CPU is out and needs changing; Your memory and virtual memory hard drive is PF, "PF utilization is too high" it is possible that you boot up with the system to start the program too much too large, and your memory is too small slightly, Or your system is poorly set ...

Recommendation: Hardware upgrades are the best way (a single liter of memory will reduce the machine's hit ratio, that is, pf down the CPU) improve a lot of ways: Install a smaller system, shut down with the boot program, clear the registry garbage, do the system disk defragmentation, set the virtual memory and environment variables, reduce the lower resolution and refresh rate , and, more absolutely, to control Panel/management tools/Computer Management, see it needs to manually shut down some system services ... Turn off the things that don't need to be started at the start, in addition to the system process to stop some of the process, of course, it requires you to recognize the role of the process, it is recommended to change the virtual memory in addition to the system disk, to some extent, can reduce the system disk file fragmentation, speed can be maintained for a long time faster PF usage is not a virtual memory usage, if you set the virtual memory to 0, this usage is not 0.

CPU usage is the normal situation, the CPU's working state of the response, in the Windows logo has been pointed out that is the CPU utilization rate, expressed as a percentage. As to how much is safe, according to my experience, my CPU is the Super line Cheng four 2.8G, when playing the game is 50% or so, usually look at the page is about ten to 20, occasionally open the file may reach a peak of more than 90. The time of antivirus is more than 40. With patch (patch) software when up to 98. The virus is kept above 95. As long as not overclocking, usually the CPU will not burn.

If your system slows down (especially if you often run more programs at the same time), you can view the PF usage values in task management, and if you take up to 100%, you can turn virtual memory up to 2 to 3x or more of memory, and then see the PF occupancy rate drop a lot. After the modification, the switching speed between multiple programs becomes no longer slow. This method can greatly enhance the speed of low memory, and the effect is good.