Performance Degradation When Heap Is Fragmented |
The information in this article applies to:
-
Microsoft Windows 2000 Professional
-
Microsoft Windows 2000 Server
-
Microsoft Windows 2000 Advanced Server
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
A supported fix is now available from Microsoft, but it is only intended to correct
the problem described in this article and should be applied only to systems
experiencing this specific problem. This fix may receive additional testing at a
later time, to further ensure product quality. Therefore, if you are not severely
affected by this problem, Microsoft recommends that you wait for the next Windows 2000 service pack that
contains this fix.
To resolve this problem immediately, download the fix as instructed below or contact
Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft
Product Support Services phone numbers and information on support costs, please go to
the following address on the World Wide Web:
http://support.microsoft.com/directory/overview.asp
The following files are available for download from the Microsoft
Download Center:
US English:
![[GRAPHIC: Download]](/library/images/support/kbgraphics/Download.gif)
Download Q271976_W2K_SP2_x86_en.exe now
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For additional information about how to download Microsoft Support
files, click the article number below
to view the article in the Microsoft Knowledge Base:
Q119591 How to Obtain Microsoft Support Files from
Online Services
Microsoft used the most current virus detection software available
on the date of posting to scan this file for viruses. Once posted,
the file is housed on secure servers that 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 this to be a problem in Microsoft Windows 2000.
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:
Q271907 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:
Q249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes
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