JSI Tip 7043. How can I improve Windows Server 2003 performance on a Pentium 4 multiprocessor?

Some Pentium 4 multiprocessor platforms will benefit from enabling the use of extended memory manager interface (XMMI) memory zeroing.

NOTE: You MUST check with your original equipment manufacturer before implementing this tip because some Pentium 4 multiprocessor platforms will experience a performance degradation.

To enable XMMI memory zeroing:

1. Copy / Paste the following to a XMMIZeroingEnable.reg file:


\[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\kernel\]

2. Merge the XMMIZeroingEnable.reg file with your registry, or run regedit /s XMMIZeroingEnable.reg.

3. Shutdown and restart Windows Server 2003.

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