Microsoft KB Archive/187830

= Performance Decrease Transmitting Data over the Network =

Article ID: 187830

Article Last Modified on 11/1/2006

-

APPLIES TO


 * 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

-



This article was previously published under Q187830



SYMPTOMS
The TransmitFile Win32 API call reads the file data directly from the file system cache and sends it out over the wire. However, during periods of stress, applications that use this API to transfer files across the network may see that the transfer is not as fast when there are less than 4 KB streams of data being transmitted.



CAUSE
Windows NT is reading 4 KB at a time as opposed to larger (and more efficient) 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 the Microsoft 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.

Additional query words: smallbiz

Keywords: kbhotfixserver kbqfe kbbug kbfix KB187830

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.