Comments on: Improve System Performance – Tweak Your Pagefile http://www.cadfanatic.com/2008/04/improve-system-performance-tweak-your-pagefile/ Welcome to CADFanatic - A Blog About SolidWorks & the 3D CAD Industry in General Tue, 09 Mar 2010 20:35:09 -0500 http://wordpress.org/?v=2.9.2 hourly 1 By: Larry Miller http://www.cadfanatic.com/2008/04/improve-system-performance-tweak-your-pagefile/comment-page-1/#comment-62 Larry Miller Fri, 24 Oct 2008 17:56:49 +0000 http://www.brianmcelyea.com/cadfanatic/?p=75#comment-62 A static pagefile is not necessary to avoid fragmentation. By default Windows uses a semi-fixed pagefile approximately 1.5 times the size of physical memory. No resizing or fragmentation will occur unless this is exceeded. But the pagefile can still grow to meet unusual demands. After a reboot (or sooner) the pagefile will revert to it's original non-fragmented size. If you have frequent memory warnings from Windows you should manually set a higher initial size for the pagefile. The upper limit should be at least twice this value. If the pagefile is fixed at too small a size you will either have out of memory errors or severe performance degradation. If it is larger than necessary you will be wasting considerable disk space and receive virtually nothing in return. The semi-fixed option has all the advantages of a fixed pagefile, yet can still grow to meet unusual demands. Larry Miller Microsoft MCSA A static pagefile is not necessary to avoid fragmentation. By default Windows uses a semi-fixed pagefile approximately 1.5 times the size of physical memory. No resizing or fragmentation will occur unless this is exceeded. But the pagefile can still grow to meet unusual demands. After a reboot (or sooner) the pagefile will revert to it’s original non-fragmented size. If you have frequent memory warnings from Windows you should manually set a higher initial size for the pagefile. The upper limit should be at least twice this value.

If the pagefile is fixed at too small a size you will either have out of memory errors or severe performance degradation. If it is larger than necessary you will be wasting considerable disk space and receive virtually nothing in return.

The semi-fixed option has all the advantages of a fixed pagefile, yet can still grow to meet unusual demands.

Larry Miller
Microsoft MCSA

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