Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.
To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
The English version of this fix should have the following file attributes or later:
Date Time Version Size File name Platform
6/22/1999 1:34 PM 1.00.0294 481,552 MQQM.DLL x86
This bug was corrected in Windows NT 4.0 Service Pack 6.
The Nagle TCP/IP AlgorithmThe Nagle TCP/IP algorithm was designed to avoid problems with small packets, called tinygrams, on slow networks. The algorithm says that a TCP/IP connection can have only one outstanding small segment that has not yet been acknowledged. The definition of "small" varies but usually it is defined as "less than the segment size", which on ethernet is about 1500 bytes.
Manually Disabling the Nagle AlgorithmYou can disable the Nagle algorithm by modifying the following registry setting and using the instructions in the "Activating the Modifications" section.
- Under the subtree HKEY_LOCAL_MACHINE find the following key:
- Choose Add Key from the Edit menu and use the following information:
Value Name: TcpNoDelay
Activating the ModificationsThe Queue Manager must be stopped and restarted after the registry changes have been made. This can be accomplished by stopping and starting the Microsoft Message Queue Service from the services control panel.
ID d'article : 235624 - Dernière mise à jour : 23 févr. 2007 - Révision : 1