LKBEN10663: HP Server DL380 / DL360 has slow network speed under windows server 2003

Symptom

Your server does not deliver the performance you expect

Cause

Microsoft introduced windows server scalable networking pack and which can cause speed problems in some circumstances

Solution

You can import the following registry key to disable the new features which should speed up the winodws network stack.

Tcp chimney does not work with
- windows firewall
- ipsec
- other firewalls
- some NDIS drivers
- IPNAT (network address translation)

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
"EnableTCPA"=dword:00000000
"EnableRSS"=dword:00000000
"EnableTCPChimney"=dword:00000000


You can also use the netsh command to enable or disable the chimey parameter:

Netsh int ip set chimney ENABLED
or
Netsh int ip set chimney DISABLED

Please look at the microsoft support site and search on 912222 for more information.

About the Author

Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.

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