Performance-related network parameters for Windows and Red Hat Enterprise Linux

You can configure the Windows or the Red Hat Enterprise Linux operating system to improve the application performance. You must set the network parameters to match the Maximo® Asset Management requirements.

Windows parameters

You can set up the following network parameters, located under the Windows registry key, to improve system performance.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters:
   TcpTimedWaitDelay dword:0000001e (30)
   StrictTimeWaitSeqCheck dword:00000001 (1)
   MaxFreeTcbs dword:00011940 (72000)
   MaxHashTableSize dword:0000ffff (65535)
   TcpWindowSize dword:0000ffff (65535)
   EnableDynamicBacklog dword:00000001 (1)
   MinimumDynamicBacklog dword:00000032 (20)
   MaximumDynamicBacklog dword:000003eb (1000)
   DynamicBacklogGrowthDelta dword:0000000a (10)
   Interfaces\TcpAckFrequency dword:00000001 (1)
   MaxUserPort dword:0000ffff (65535)
These settings apply to Microsoft Windows Server 2003. For Microsoft Windows Server 2008, the default dynamic port range is changed. The new default start port is 49152 and the default end port is 65535. Therefore, 16,384 ports are available by default (not 5,000).

To view the dynamic port range, start the command prompt and use the netsh command:


netsh int ipv4 show dynamicport tcp

To change the dynamic port range for the maximum number of ports allowed, run the following command:


netsh int ipv4 set dynamicport tcp start=1025 num=64510

The minimum start port is 1025 and the maximum end port cannot exceed 65535.

Red Hat Enterprise Linux parameters

For networking, enter the following command to improve your application performance:


sysctl -w net.ipv4.ip_local_port_range="1024 65535"


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