FIX: The Copy Command is Very Slow on Large Files (826768)



The information in this article applies to:

  • Microsoft Windows CE .NET 4.2

SYMPTOMS

If you copy large files by using the command interpreter copy command, the copy task is very slow.

CAUSE

The copy command uses a 4-kilobyte (KB) buffer for file operations. This results in poor performance on very large files.

RESOLUTION

Hotfix Information

A supported software update is now available from Microsoft as Windows CE 4.20 Core OS QFE 030814_KB826768. 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


This hotfix does not replace any other hotfixes.

File Information

The English version of this package has the file attributes (or later) that are listed in the following table.
Date         Time   Version            Size    File name
   --------------------------------------------------------------

   14-Aug-2003  22:29  4.2.3.814         731,752  Wincepb42-030814-kb826768-armv4.exe  
   14-Aug-2003  22:29  4.2.3.814         731,752  Wincepb42-030814-kb826768-armv4i.exe  
   14-Aug-2003  22:29  4.2.3.814         739,944  Wincepb42-030814-kb826768-mipsii.exe  
   14-Aug-2003  22:29  4.2.3.814         739,944  Wincepb42-030814-kb826768-mipsii_fp.exe  
   14-Aug-2003  22:29  4.2.3.814         744,040  Wincepb42-030814-kb826768-mipsiv.exe  
   14-Aug-2003  22:29  4.2.3.814         744,040  Wincepb42-030814-kb826768-mipsiv_fp.exe  
   14-Aug-2003  22:28  4.2.3.814         723,560  Wincepb42-030814-kb826768-sh3.exe  
   14-Aug-2003  22:28  4.2.3.814         723,560  Wincepb42-030814-kb826768-sh4.exe  
   14-Aug-2003  22:28  4.2.3.814         703,080  Wincepb42-030814-kb826768-x86.exe  
The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
   Date         Time                      Size    File name
   --------------------------------------------------------------

   Path: 030814_kb826768\Public\Common\Oak\Lib\Armv4\Debug
   12-Aug-2003  15:12                    293,016  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Armv4\Retail
   12-Aug-2003  15:12                    256,488  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Armv4i\Debug
   12-Aug-2003  15:12                    293,506  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Armv4i\Retail
   12-Aug-2003  15:12                    256,962  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Mipsii\Debug
   12-Aug-2003  15:12                    300,152  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Mipsii\Retail
   12-Aug-2003  15:12                    265,494  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Mipsii_fp\Debug
   12-Aug-2003  15:12                    300,196  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Mipsii_fp\Retail
   12-Aug-2003  15:12                    265,518  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Mipsiv\Debug
   12-Aug-2003  15:12                    302,156  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Mipsiv\Retail
   12-Aug-2003  15:12                    266,808  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Mipsiv_fp\Debug
   12-Aug-2003  15:13                    302,200  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Mipsiv_fp\Retail
   12-Aug-2003  15:13                    266,832  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Sh3\Debug
   12-Aug-2003  15:13                    251,344  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Sh3\Retail
   12-Aug-2003  15:13                    233,992  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Sh4\Debug
   12-Aug-2003  15:13                    251,344  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\Sh4\Retail
   12-Aug-2003  15:13                    233,824  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\X86\Debug
   12-Aug-2003  15:12                    244,408  Cmd.lib

   Path: 030814_kb826768\Public\Common\Oak\Lib\X86\Retail
   12-Aug-2003  15:12                    221,612  Cmd.lib

   

STATUS

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

Modification Type:MinorLast Reviewed:5/27/2005
Keywords:kbBug kbfix kbQFE KB826768 kbAudOEM