Increase Request Buffer Size

October 25, 2008 by
Filed under: Tweaks 

In higher latency Network environments, delays may be encountered with the default request buffer size (4356 decimal). The range of this parameter is 1024 – 65535 bytes. Testing has shown that, in most standard Ethernet environments, 16384 (decimal) is a better choice, if memory is available. This tweak only applies to LANs, and helps with slow browsing of large directories.

To change this setting, edit:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanmanServer\Parameters and Add Value name SizReqBuf as a type REG_DWORD, increase its (decimal) value to  16384 or even higher and restart the computer for changes to take effect.

Here is the MS KB Article 320829 that describes the procedure as well.


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