ISSUE SUMMARY
On Windows platforms code was previously added to zero-fill each newly allocated data file in order to work around an issue described in this Windows Knowledge Base article. As this issue only applies to Windows 7 and Windows Server 2008 R2, the zero-filling unnecessarily slows down file allocation on other, unaffected Windows versions, namely Windows 8 and Windows Server 2012.
USER IMPACT
Slower file allocation on Windows platforms.
SOLUTION
The fix is to restrict the zero-filling of newly allocated files to only the affected Windows versions.
WORKAROUNDS
None
AFFECTED VERSIONS
All recent production release versions up to 2.4.9 are affected.
PATCHES
The fix is included in the 2.4.10 production release and the 2.5.5 development version, which will evolve into the 2.6.0 production release.
Original Description
Currently due to an NTFS issue the server writes zeros to the data file when allocating it. This is not necessary if the OS has the http://support.microsoft.com/kb/2731284 hotfix.
The server needs to detect the install of the above hotfix and bypass writing of 0's
- is related to
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SERVER-8481 Check to see if Windows 8/Server 2012 incorporates the 2008 R2 NTFS hotfix
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- Closed
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- related to
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SERVER-8082 MongoDB Windows 2008 R2 build should report if 33 DOS error hotfix is not present
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- Closed
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