Slow Performance Transferring Large Data Blocks with RPC (301117)

The information in this article applies to:

Microsoft Windows 2000 Server SP1
Microsoft Windows 2000 Server SP2
Microsoft Windows 2000 Advanced Server SP1
Microsoft Windows 2000 Advanced Server SP2
Microsoft Windows 2000 Professional SP1
Microsoft Windows 2000 Professional SP2

This article was previously published under Q301117

SYMPTOMS

When you transfer large blocks of data by using RPC over the NCACN_IP_TCP protocol, a performance drop may occur in Windows 2000. When the request exceeds 128 kilobytes (KB), the transfer rate is only roughly .87 MB/second.

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 English version of this fix should have the following file attributes or later:

   Date        Time      Version        Size     File name
   --------------------------------------------------------
   7/5/2001   11:02a   5.0.2195.3761   940,304   Ole32.dll
   7/5/2001   11:02a   5.0.2195.3800   427,792   Rpcrt4.dll
   7/5/2001   11:02a   5.0.2195.3761   185,104   Rpcss.dll

With this hotfix, the transfer rate is around 8.55 MB/second.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.

MORE INFORMATION

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:	Minor	Last Reviewed:	9/26/2005
Keywords:	kbHotfixServer kbQFE kbbug kbfix kbnetwork kbWin2000PreSP3Fix kbWin2000sp3fix KB301117