Pagefile type : Dynamic , where the pagefile grows depending on memory load: Minimum size is 0 and maximum size must satisfy the extreme memory load. Will only take disk space when needed. The resizing will increase file fragmentation, thus overall disk access will become slower over time. The max memory load is dependent on disk space available.
Permanent , where the pagefile max. Will have to take a lot more disk space than there is needed. The permanent size will avoid file fragmentation. The max memory load is dependent on the permanent size.
Semi-permanent , where the pagefile has an initial permanent size but can grow if needed: Minimum size satisfies the common memory load and maximum size must satisfy the extreme memory load. Will take a little more disk space than there is usual needed, by its initial size. Only when the memory load peaks, then it will cause file fragmentation. Pagefile disk : Primary-disk , where the pagefile is placed on the same disk as the operating system: Will share the disk with the other applications Like the operating system.
Separate-disk , where the pagefile is placed on its own disk: The operating system and the pagefile should always be placed on the fastest disk, so unless the separate-disk has the same speed as the primary-disk, then the it will not be the optimal setup. If the separate disk only contains the pagefile, then one can increase the performance by enabling write-caching for the hard disk. Note that if it is an IDE HDD system , and the separate-disk is placed as slave on the same IDE-cable as the primary-disk, then it will slowdown the disk-access for both disks.
Multiple-disks , where the pagefile is spanned over several partitions on different disks: Like with the separate-disk, the pagefile should only be placed on the fastest disk s. Will divide the pagefile load to several disks. The internal algorithm that decides which pagefile to use, will choose the pagefile on the disk that less frequently used. Ensure that the disks used for pagefiles are not heavily accessed. RAM-disk , where the pagefile is placed in the physical memory: Requires that one have enough RAM to satisfy twice the common memory load.
Will lower the limit for when the paging algorithm will start paging to free up memory for file caching. The paging algorithm will spend unnecessary time on moving data from one part of the RAM to the other, when reaching the limit on the available physical memory.
Pagefile partition : Primary-Partition , the first partition on the disk: Normally the fastest partition, as it is placed on the outer tracks on the disk. A dynamic pagefile will cause fragmentation. A permanent pagefile will always occupy more space than needed. To lower HDD seek time to the files frequently paged into memory Operating System, Applications, Pagefile , then the primary partition should be sized to fit these files so they are grouped together.
Dedicated-Partition , where the pagefile is placed on its own partition: Normally slower than the primary partition, as it is placed after the primary partition. Will still share the disk with the other applications, when they access files on the other partitions. Like the operating system. Will take more disk space than there is normally needed. What is the best pagefile configuration? Most people will get the best configuration by using a Semi-Permanent -pagefile, which is placed on the C-Drive along with the operating system Primary-Partition on the Primary-Disk.
This is the default configuration of the Windows NT operating systems, and one should keep the page file set to "System Managed Size".
If having another physical hard disk available besides the primary hard-disk and it is just as fast, then one can consider to split the pagefile over both hard-disks. One should ensure that the extra hard disk is not frequently accessed by other applications.
If you plan on putting the page file on a separate drive, create a partition large enough for it and only keep the page file in that partition. For almost every Windows user, we still recommend letting Windows manage the page file on the primary drive. Moving the page file to a slower hard drive can cause the computer to have to wait for the slower HDD to catch up to the SSD.
No, again this reduces the system performance. While it is true the access times on flash memory can be faster than a hard drive, the transfer speeds over USB are much slower. See viewing Windows virtual memory or page file settings for further information about accessing this information. Before changing your page file settings, make a note of the current settings so that you can change it back later if your computer is not performing well.
It's not uncommon to experience a system performance increase after changing the page file size or disabling the page file. However, as mentioned above, doing so may decrease the overall stability of the computer. So, it's a good idea to be prepared to revert the changes if necessary.
Open the virtual memory settings and under the Change option check the "Automatically manage paging file size for all drives" or "System managed size" depending on your version of Windows. Reboot the computer after changing the settings. Most are based on some percentage of the amount of RAM installed on the computer. These RAM-based pagefile size recommendations are just estimates. None of them will accurately reflect the best pagefile size for your computer.
The best way to determine the appropriate pagefile size is to use the Performance Monitor, which has two counters that you can use to determine your pagefile's optimal size:. The latter value is most useful in determining the best pagefile size. Start by creating a pagefile that is 1. Then, perform the following steps:. These are optional configurations, but you might want to implement them in special circumstances. I recommend that you enable this option only if you have multiple operating systems on the same machine.
It's possible to read the contents of the pagefile if you boot into another operating system. However, if you have only a single operating system, the pagefile will be locked and not readable. With a single operating system, you shouldn't wipe the contents of the pagefile; those contents may be helpful to you if you ever need to run a forensic analysis of the machine.
The Windows XP operating system automatically installs and configures a pagefile during system setup. While the default configuration of the pagefile does a reasonably good job, you can make several improvements on the default configuration. By following the recommendations I've given here, you'll be able to take command of your pagefile and improve your system's performance.
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