Through the use of paging files, Windows allocates space on your hard drive for use as if it were actually memory. This space is known as virtual memory. The following steps describe how to optimize virtual memory in Windows to achieve maximum performance from iFIX.
To optimize the virtual memory paging
file for iFIX in Windows:
- From the Windows Control Panel, select System, and click on Advanced Systems. Next, click the Advanced tab and then in the Performance section click Settings. The Performance Options dialog box appears. Click the Advanced tab.
- In the Virtual Memory group box, select Change.
- In the Initial Size field, enter a value equal to three times your physical memory, or enter 4 GB; the value should not to exceed the Maximum Size value.
- In the Maximum Size field, enter a value equal to three times your physical memory, or enter 4 GB – whichever is the larger of the two values.
NOTE: For more information on the 4 GB paging file limit, refer to article 237740 on the Microsoft Knowledgebase: http://support.microsoft.com/kb/237740/en-us.
- Select Set.
- Click OK to save the changes and exit the dialog box.
NOTE: If the paging file is set to grow dynamically, your system may experience severe performance problems during runtime. To ensure optimal performance, be sure that the Initial Size and Maximum Size of the paging file are the same so that the paging file does not grow dynamically.
