Slow Performance with FPNW and More than 60 Printers

 Last reviewed: March 24, 1997
Article ID: Q142056
The information in this article applies to:
  • Microsoft Windows NT Server version 3.51
  • Microsoft File and Print Services for NetWare version 3.51 -------------------------------------------------------------------------

SYMPTOMS

After you add more than 60 printers using Print Manager on a Windows NT Server running File and Print Services for NetWare (FPNW), server performance quickly degrades. Performance Monitor shows processor utilization at a constant 100%, while the user mode service portion of FPNW (NWSSVC.EXE) and the Windows NT spooler (SPOOLSS.EXE) shows between 45% and 55% of the processor utilization. Acceptable performance levels are returned if the number of printers defined is reduced to 60 or less.

CAUSE

The FPNW printing component does not scale well to large numbers of printers (greater than 60) due to its current program design.

RESOLUTION

To resolve this problem, upgrade to Windows NT Server version 4.0.

The program design for the FPNW printing component has been changed for the next release of Windows NT, removing the scaling problem.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 3.51. This problem was corrected in Windows NT Server version 4.0.

Additional query words: prodnt
Keywords : kbbug3.51 kbprint ntprint NTSrv
Version : 3.51
Platform : WinNT

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: March 24, 1997
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.