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Optimize and troubleshoot disk performance. It is possible to confuse a memory shortage that causes paging with a disk bottleneck that results in paging. As a result, when you investigate the causes of paging, where a memory shortage is not apparent, make sure to track disk usage counters such as the following along with memory counters: Physical Disk\ % Disk Time Physical Disk\ Avg. Disk Queue Length Page Reads/sec with % Disk Time and Avg. Disk Queue Length. If a low rate of page-read operations coincides with high values for % Disk Time and Avg. Disk Queue Length, there could be a disk bottleneck. If an increase in queue length is not accompanied by a decrease in the pages-read rate, then a memory shortage exists. To determine the impact of excessive paging on disk activity, multiply the values of the Physical Disk\ Avg. Disk sec/Transfer and Memory\ Pages/sec counters. If the product of these counters exceeds 0.1, paging is taking more than 10 percent of disk access time. If this occurs over a long period, you probably need more memory. To check for excessive paging due to programs that are running.   Stop the program with the highest working set value and see whether that dramatically changes the paging rate. If you suspect excessive paging, check the Memory\ Pages/sec counter. This counter shows the number of pages that needed to be read from disk because they were not in physical memory.   Manage your paging file for better performance:   Place a paging file on other disk drives. If you have multiple hard disks, splitting up the paging file will speed up the access time. If you have two hard disks and you split the paging file, both hard disks can be accessing information simultaneously, greatly increasing the throughput. Increase the size of the paging file. The recommended size for the paging file is 1.5 times the amount of RAM available on your system.