JSI Tip 6970. Windows XP IrDA file transfers are slower than Windows 2000 IrDA file transfers?

The subject problem with Infrared Data Association file transfers are usually the result of buffer under run conditions that are caused by too much latency in the C3 power state transition.

You should ask your hardware vendor for a BIOS update that is designed to reduce C3 power state transition latency.

If no update is available:

1. Use the Registry Editor to navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Processor.

2. Add a CStateFlags Value Name, a REG_DWORD data type, and set the data value to 8.

NOTE: See the Windows Native Processor Performance Control white paper.

NOTE: For the best IrDA performance, both computers must be running the same operating system and Service Pack.



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