Performance Decrease Transmitting Data over the Network

This article was previously published under Q187830
This article has been archived. It is offered "as is" and will no longer be updated.
SYMPTOMS
The TransmitFile() Win32 API call reads the file data directly from thefile system cache and sends it out over the wire. However, during periodsof stress, applications that use this API to transfer files across thenetwork may see that the transfer is not as fast when there are less than 4KB streams of data being transmitted.
CAUSE
Windows NT is reading 4 KB at a time as opposed to larger (and moreefficient) units.
RESOLUTION
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack

STATUS
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.
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Properties

Article ID: 187830 - Last Review: 02/23/2014 01:09:39 - Revision: 3.2

  • Microsoft Windows NT Server 4.0, Terminal Server Edition
  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Windows NT Workstation 4.0 Developer Edition
  • Microsoft Windows NT Server 4.0 Enterprise Edition
  • Microsoft BackOffice Small Business Server 4.0
  • Microsoft BackOffice Small Business Server 4.0a
  • kbnosurvey kbarchive kbhotfixserver kbqfe kbbug kbfix KB187830
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