Article ID: 224585 - Last Review: November 1, 2006 - Revision: 2.5 TCB Hash Function Modified to Improve Network PerformanceThis article was previously published under Q224585 On This PageSYMPTOMS
Network performance degrades as user sessions increase.
CAUSE
TCP creates and maintains a hash table of transmission control blocks (TCBs) to store data for each TCP connection. A control block is attached to the table for each active connection. The control block is deleted shortly after the connection is closed. One aspect of connection overhead is the time it takes to search the Transmission Control Block (TCB) table. Therefore, an optimum hash function helps improve network performance.
RESOLUTIONWindows NT Server or Workstation 4.0To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:
http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS
(http://support.microsoft.com/default.aspx?scid=fh;en-us;cntactms)
Windows NT Server 4.0, Terminal Server EditionTo resolve this problem, obtain the latest service pack for Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:152734
(http://support.microsoft.com/kb/152734/EN-US/
)
How to Obtain the Latest Windows NT 4.0 Service Pack
STATUSMicrosoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows NT Server version 4.0, Terminal Server Edition Service Pack 6. | Article Translations
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