Microsoft KB Archive/327284

= Slow Performance When You Copy Files on the FAT File System =

Article ID: 327284

Article Last Modified on 5/26/2005

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APPLIES TO


 * Microsoft Windows CE Platform Builder 4.0

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This article was previously published under Q327284



SYMPTOMS
Copying a file on the FAT file system may take longer than copying the file on other file systems.



CAUSE
Multiple-sector accessing in the FAT file system is turned off on Windows CE 4.0 if caching is turned on.



RESOLUTION
A supported software update is now available from Microsoft as Windows CE 4.0 Core OS QFE Q327284. To resolve this problem immediately, click the following article number for information about obtaining Windows CE Platform Builder and core operating system software updates:

837392 How to locate core operating system fixes for Microsoft Windows CE Platform Builder products

The English version of this package has the following file attributes or later:   Date         Time   Size     File name ---  20-Aug-2002  13:48  625,248  020820_armv4i_wce40-q327284.exe 20-Aug-2002 13:48  625,248  020820_armv4t_wce40-q327284.exe 20-Aug-2002 13:48  621,152  020820_armv4_wce40-q327284.exe 20-Aug-2002 13:48  576,096  020820_mips16_wce40-q327284.exe 20-Aug-2002 13:48  645,728  020820_mipsii_fp_wce40-q327284.ex   20-Aug-2002  13:48  645,728  020820_mipsii_wce40-q327284.exe 20-Aug-2002 13:48  662,112  020820_mipsiv_fp_wce40-q327284.exe 20-Aug-2002 13:48  662,112  020820_mipsiv_wce40-q327284.exe 20-Aug-2002 13:48  592,480  020820_sh3_wce40-q327284.exe 20-Aug-2002 13:48  592,480  020820_sh4_wce40-q327284.exe 20-Aug-2002 13:48  543,328  020820_x86_wce40-q327284.exe The English version of this fix has the file attributes (or later) that are listed in the following table.   Date         Time   Size     File name   Platform -  05-Aug-2002  11:48  716,682  Fatfsd.lib  armv4\debug 05-Aug-2002 11:48   77,824  Fatfsd.pdb  armv4\debug 05-Aug-2002 11:48  402,730  Fatfsd.lib  armv4\retail 05-Aug-2002 11:48   77,824  Fatfsd.pdb  armv4\retail 05-Aug-2002 11:49  717,420  Fatfsd.lib  armv4i\debug 05-Aug-2002 11:49   77,824  Fatfsd.pdb  armv4i\debug 05-Aug-2002 11:49  403,530  Fatfsd.lib  armv4i\retail 05-Aug-2002 11:49   77,824  Fatfsd.pdb  armv4i\retail 05-Aug-2002 11:48  682,428  Fatfsd.lib  armv4t\debug 05-Aug-2002 11:48   77,824  Fatfsd.pdb  armv4t\debug 05-Aug-2002 11:48  403,130  Fatfsd.lib  armv4t\retail 05-Aug-2002 11:48   77,824  Fatfsd.pdb  armv4t\retail 05-Aug-2002 11:50  622,384  Fatfsd.lib  mips16\debug 05-Aug-2002 11:50   86,016  Fatfsd.pdb  mips16\debug 05-Aug-2002 11:50  342,726  Fatfsd.lib  mips16\retail 05-Aug-2002 11:50   86,016  Fatfsd.pdb  mips16\retail 05-Aug-2002 11:49  733,658  Fatfsd.lib  mipsii\debug 05-Aug-2002 11:49   86,016  Fatfsd.pdb  mipsii\debug 05-Aug-2002 11:49  404,166  Fatfsd.lib  mipsii\retail 05-Aug-2002 11:49   86,016  Fatfsd.pdb  mipsii\retail 05-Aug-2002 11:50  733,798  Fatfsd.lib  mipsII_fp\debug 05-Aug-2002 11:50   86,016  Fatfsd.pdb  mipsII_fp\debug 05-Aug-2002 11:50  404,306  Fatfsd.lib  mipsII_fp\retail 05-Aug-2002 11:50   86,016  Fatfsd.pdb  mipsII_fp\retail 05-Aug-2002 11:49  749,990  Fatfsd.lib  mipsiv\debug 05-Aug-2002 11:49   86,016  Fatfsd.pdb  mipsiv\debug 05-Aug-2002 11:49  420,586  Fatfsd.lib  mipsiv\retail 05-Aug-2002 11:49   86,016  Fatfsd.pdb  mipsiv\retail 05-Aug-2002 11:50  750,130  Fatfsd.lib  mipsiv_fp\debug 05-Aug-2002 11:50   86,016  Fatfsd.pdb  mipsiv_fp\debug 05-Aug-2002 11:50  420,726  Fatfsd.lib  mipsiv_fp\retail 05-Aug-2002 11:50   86,016  Fatfsd.pdb  mipsiv_fp\retail 05-Aug-2002 11:47  626,148  Fatfsd.lib  sh3\debug 05-Aug-2002 11:47   86,016  Fatfsd.pdb  sh3\debug 05-Aug-2002 11:47  369,082  Fatfsd.lib  sh3\retail 05-Aug-2002 11:47   86,016  Fatfsd.pdb  sh3\retail 05-Aug-2002 11:48  625,794  Fatfsd.lib  sh4\debug 05-Aug-2002 11:48   77,824  Fatfsd.pdb  sh4\debug 05-Aug-2002 11:48  368,268  Fatfsd.lib  sh4\retail 05-Aug-2002 11:48   77,824  Fatfsd.pdb  sh4\retail 05-Aug-2002 11:47  613,944  Fatfsd.lib  x86\debug 05-Aug-2002 11:47   86,016  Fatfsd.pdb  x86\debug 05-Aug-2002 11:47  325,442  Fatfsd.lib  x86\retail 05-Aug-2002 11:47   77,824  Fatfsd.pdb  x86\retail This hotfix turns on multiple-sector accessing in FAT when caching is on. This causes performance improvements when you copy large files over the FATFS file system.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Additional query words: fatfs

Keywords: kbbug kbfix kbqfe KB327284

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