See "Changing the Paging File's Location and Size" to learn how to customize the page file size. This won't work, however, because Windows 7 needs the page file anyway, and some programs might crash if no virtual memory is present. If you have a large amount of RAM (at least 2GB), you might think that Windows 7 would never need virtual memory, so it would be okay to turn off the page file.In practice, however, it has been shown that this trick does not improve performance, and in some cases actually decreases performance. You might think that setting the initial size and the maximum size to the same relatively large value (say, two or three times RAM) would improve performance because it would mean that Windows 7 would never resize the page file.This should eventually result in the smallest possible page file, but you'll see a bit of a performance drop because Windows 7 will often have to increase the size the page file dynamically as you work with your programs. If disk space is at a premium and you can't move the page file to a drive with more free space, set the initial page file size to 16MB (the minimum size supported by Windows 7).On systems with 2GB RAM or more, you should set the initial page file size to half the RAM size, but leave the maximum size at three times the amount of RAM, just in case. Therefore, the default initial page file size is too large and the disk space reserved by Windows 7 is wasted. The more RAM you have, the less likely it is that Windows 7 will use the page file.If your computer has less than 1GB RAM, you should leave the page file sizes as is. The less RAM you have, the more likely it is that Windows 7 will use the page file, so the Windows 7 default page file sizes make sense.Here are some notes about custom page file sizes: The default values work well on most systems, but you might want to customize these sizes to suit your own configuration. For example, on a system with 1GB RAM, the page file's initial size will be 1.5GB and its maximum size will be 3GB. See "Changing the Paging File's Location and Size" to learn how to split the page file.īy default, Windows 7 sets the initial size of the page file to 1.5 times the amount of RAM in your system, and it sets the maximum size of the page file to 3 times the amount of RAM. For example, if your current initial page file size is 384MB, you'd set up a page file on a drive with a 192MB initial size, and another page file on a second drive with a 192MB initial size. If you have two or more physical drives (not just two or more partitions on a single physical drive), splitting the page file over each drive can improve performance because it means that Windows 7 can extract data from each drive's page file simultaneously. Author Paul McFedries introduces new styles and techniques to maximize your Windows 7 performance. This book goes deep into Windows 7 and covers everything from security settings to startup optimization and networking. This chapter excerpt on Tuning Windows 7's Performance (download PDF) is taken from the book Microsoft Windows 7 Unleashed. See "Changing the Paging File's Location and Size," later in this chapter, for the information about moving the page file. Storing the page file on the disk with the most space gives Windows 7 the most flexibility. If you have multiple hard disks, store the page file on the hard disk that has the most free space - Windows 7 expands and contracts the page file dynamically depending on the system's needs. Therefore, you should store the page file on an uncompressed partition. However, as with all file operations on a compressed partition, the performance of page file operations suffers because of the compression and decompression required.
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