Performance Degradation When Heap Is Fragmented (257357)


The information in this article applies to:

  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Professional
This article was previously published under Q257357

SYMPTOMS

An application that frequently allocates or frees memory (directly or indirectly) may experience serious performance degradation when the heap is fragmented.

CAUSE

This behavior occurs because an internal algorithm in finding the free blocks does not perform well when the heap is fragmented.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The following files are available for download from the Microsoft Download Center:

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For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to Obtain Microsoft Support Files from Online Services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file. The English-language version of this fix should have the following file attributes or later: 
   Date      Time    Version         Size      File name
   --------------------------------------------------------
   04/11/00  04:52p  5.0.2195.2030   475,408   Ntdll.dll
   04/11/00  04:53p  5.0.2195.2030    88,336   Ntsdexts.dll
NOTE: To view the version, right-click the file in Windows Explorer, click Properties, and then click the Version tab.

STATUS

Microsoft has confirmed that this is a problem in Microsoft Windows 2000. This problem was first corrected in Windows 2000 Service Pack 2.

MORE INFORMATION

For additional information about what is included in this hotfix package, click the article number below to view the article in the Microsoft Knowledge Base:

271907 Error SC_E_LOGON_DENIED After a Reset of Local Machine Account Password

For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

Modification Type:MinorLast Reviewed:9/23/2005
Keywords:kbHotfixServer kbQFE kbbug kbfix kbgraphxlinkcritical KB257357
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