Tuning network performance on Windows

Endeca provides two registry scripts that you can use, singly or in combination, to tune your server’s network performance.

The tcp_time_wait_tune.reg script tunes the server’s network performance by changing the default time wait interval from 240,000 to 60,000 milliseconds. This change accelerates the rate at which the server re-uses ports when establishing TCP connections.
To determine if you need to run the tuning script, open the Registry Editor and look for the following key:
```
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Tcpip\Parameters\TcpTimedWaitDelay
```
Note: In the Registry Editor Explorer pane, expand the folders until you reach Parameters. Then click on the Parameters folder and look for the TcpTimedWaitDelay setting in the right pane.

If this key does not exist, that means that the system is using the default time-out of 240,000 milliseconds.
The tcp_max_ports_tune.reg script increases the number of ports available for TCP connections from 5,000 to 65,534. The affected key appears in the Registry Editor as follows:
```
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Tcpip\Parameters\MaxUserPort
```

To tune network performance on Windows:

In the %ENDECA_MDEX_ROOT%\bin directory, double-click one of the following scripts:
- tcp_time_wait_tune.reg
- tcp_max_ports_tune.reg
When the information box reading “Are you sure you want to add the information in script name to the registry?” appears, click Yes.
The system displays a confirmation message that reads “Information in script name has been successfully added to the registry.” Click OK.
Optionally, repeat these steps for the other tuning script.
Reboot the server for the registry changes to take effect.