NLB cluster : Timer starvation has subsided
Information regarding this problem is discussed in Microsoft Support Knowledge Base article 951037. Basically, Server 2008 introduces a TCP Chimney Offload feature and it’s incompatible with NLB. To turn off the TCP Chimney feature:
1. Open a Command Prompt
2. Run the following command: netsh int tcp set global chimney=disabled
3.Close the Command Prompt
4.Open Network and Sharing Center (Start -> Control Panel -> Network and Sharing Center)
5.Click Manage Network Connections
6.Right click the NLB NIC and select Properties
7.Click the Configure button
8.Click the Advanced tab
9.Look for TCP Offload properties in the list on the left and change their value to Disabled
Offload properties will vary by NIC. Look for things like:
- IPv4 Checksum Offload
- IPv4 TSO Offload
- TCP Checksum Offload
- UDP Checksum Offload
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