You Experience Slow File Server Performance and Delays Occur When You
WGID:491
ID: 822219.KB.EN-US CREATED: 2003-06-02 MODIFIED: 2003-08-08
Public | kbAudITPRO kbAudEndUser
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The information in this article applies to:
- Microsoft Windows XP Professional
- Microsoft Windows XP Tablet PC Edition
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Professional
- Microsoft Windows NT Server 4.0 (Version: 4.0)
- Microsoft Windows NT Server 4.0 Terminal Server Edition
- Microsoft Windows NT Server, Enterprise Edition
- Microsoft Windows NT Workstation 4.0 (Version: 4.0)
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Important This article contains information about modifying the registry.
Before you modify the registry, make sure to back it up and make sure that
you understand how to restore the registry if a problem occurs. For
information about how to back up, restore, and edit the registry, click the
following article number to view the article in the Microsoft Knowledge
Base:
KBLink:256986.KB.[LN]: Description of the Microsoft Windows Registry
SYMPTOMS
========
You may experience one or more of the following symptoms when you work with
files over the network:
- A Windows-based file server that is configured as a file and print
server stops responding and file and print server functionality
temporarily stops.
- You experience an unexpectedly long delay when you open, save, close,
delete, or print files that are located on a shared resource.
- You experience a temporary decrease in performance when you use a
program over the network. Performance typically slows down for
approximately 40 to 45 seconds. However, some delays may last up to 5
minutes.
- You experience a delay when you perform file copy or backup
operations.
- Windows Explorer stops responding when you connect to a shared
resource or you see a red X on the connected network drive in Windows
Explorer.
- When you log on to the file server, after you type your name and
password in the "Log On to Windows" dialog box, a blank screen appears.
The desktop does not appear.
- A program that uses remote procedure call (RPC) or uses named pipes
to connect to a file server stops responding.
- The server temporarily stops responding and one or more event ID messages
similar to the following messages appear in the system log on the file
server:
Event ID: 2022
Source: Srv
Type: Error
Description:
Server was unable to find a free connection <number> times in the last
<number> seconds.
Event ID: 2021
Source: Srv
Type: Error
Description:
Server was unable to create a work item <number> times in the last
<number> seconds.
Event ID: 2020
Source: Srv
Type: Error
Description:
The server was unable to allocate from the system paged pool because the
pool was empty.
Event ID: 2019
Source: Srv
Type: Error
Description:
The server was unable to allocate from the system nonpaged pool because
the pool was empty.
Event ID: 2510
Source: Server
Event Type: Error
Description:
The server service was unable to map error code 1722.
1722 = RPC_S_SERVER_UNAVAILABLE = RPC Service is unavailable.
Additionally, the following event appears in the system log on the client
computer:
Event ID: 3013
Event Type: Error
Event Source: MrxSmb / Rdr
Description:
The redirector has timed out a request to <ComputerName>.
- You receive an error message similar to one of the following messages when
you try to connect to a shared resource:
System error 53. The network path was not found.
-or-
System error 64. The specified network name is no longer available.
- You are intermittently disconnected from network resources, and you
cannot reconnect to the network resources on the file server. However,
you can ping the server, and you can use a Terminal Services session to
connect to the server.
- If multiple users try to access Microsoft Office documents on the
server, the "File is locked for editing" dialog box does not always
appear when the second user opens the file.
- A network trace indicates a 30 to 40 second delay between an SMB
Service client command and a response from the file server.
CAUSE
=====
This issue may occur if a non-Microsoft program that is installed on your
computer uses an outdated kernel-mode filter driver. The kernel-mode
filter driver may be outdated if the following conditions are true:
- One of the following programs is installed on the computer:
- ARCserve Backup Agent for Open Files or ARCserve Open File Agent
from Computer Associates International, Inc. is installed on your computer,
and the Ofant.sys driver for the program is outdated.
- Open Transaction Manager is installed on your computer, and the
Otman.sys driver for the program is outdated.
Note Open Transaction Manager is included with certain programs from
VERITAS Software Corporation, but it can also be installed separately from
the VERITAS program. For example, Open Transaction Manager may be included
with Open File Option. This program may be included with VERITAS Backup
Exec.
- A VERITAS program that uses the Otman4.sys or Otman5.sys driver (such as
Open File Option) is installed on your computer, and the Otman4.sys or
Otman5.sys driver for the program is outdated.
- The driver for the program is incompatible with the filter driver
that is installed on the computer by a non-Microsoft antivirus program.
As a result, the filter driver on the server may return an incorrect
status code to the Server service. For example, the filter driver may
return a STATUS_SUCCESS code instead of a
STATUS_OPLOCK_BREAK_IN_PROGRESS code.
RESOLUTION
==========
To resolve this issue, contact the manufacturer of the program to inquire
about the availability of a filter driver update. For more information about
how to contact Computer Associates to obtain the latest update for the
Ofant.sys driver, visit the following Computer Associates Web site:
http://support.ca.com/
If you installed Open Transaction Manager separately, contact Columbia Data
Products, Inc. to inquire about the availability of an update that may
resolve this issue. To contact Columbia Data Products, visit the following
Columbia Data Products Web site:
http://www.cdp.com/
For more information about how to contact VERITAS, visit the following
VERITAS Web site:
http://support.veritas.com/
Microsoft provides third-party contact information to help you find
technical support. This contact information may change without notice.
Microsoft does not guarantee the accuracy of this third-party contact
information.
MORE INFORMATION
================
WARNING: If you use Registry Editor incorrectly, you may cause serious
problems that may require you to reinstall your operating system. Microsoft
cannot guarantee that you can solve problems that result from using Registry
Editor incorrectly. Use Registry Editor at your own risk.
To temporarily work around this issue, restart the Server services on the
server. To restart the Server services, follow these steps:
1. Click "Start", and then click "Run".
2. In the "Open" box, type "cmd" (without the quotation marks), and
then click "OK".
3. At the command prompt, type the following lines, and press ENTER after
each line:
"net stop server
net start server" (without the quotation marks)
To troubleshoot this issue, use any of the following methods:
- Use Performance Logs and Alerts to monitor the"Avg. Disk Queue
Length" counter of the "PhysicalDisk" performance object. Under
ordinary conditions, the number of waiting input/output (I/O) requests
is typically no more than 1.5 to 2 times the number of spindles that
the physical disk has. Most disks have one spindle, although redundant
array of independent disks (RAID) devices typically have more than one
spindle. When a program runs small successive I/O operations, you see a
spike in the "Current Disk Queue Length" counter when I/O-bound
operations are queued. You may also see an increase in the "Context
Switches/sec" counter of the "System" performance object.
- Disable opportunistic locking on either the client or on the server. To
disable opportunistic locking on the client, set the following registry
value to 1:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MRXSmb\Parameters\O
plocksDisabledTo disable opportunistic locking on the server, set the
following registry value to 0:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parame
ters\EnableOplocks
For additional information about how to disable opportunistic locking, click
the following article number to view the article in the Microsoft Knowledge
Base:
KBLink:296264.KB.[LN]: Configuring Opportunistic Locking in Windows 2000
- Use the Microsoft Configuration Capture Utility (MPS_REPORTS) to determine
the version of the filter driver that is installed on your computer.
For additional information about the Microsoft Configuration Capture
Utility, click the following article number to view the article in the
Microsoft Knowledge Base:
KBLink:818742.KB.[LN]: Overview of the Microsoft Configuration Capture
Utility (MPS_REPORTS)
- Edit the registry to temporarily deactivate the filter driver.
For additional information about how to temporarily deactivate the
kernel-mode filter driver, click the following article number to view the
article in the Microsoft Knowledge Base:
KBLink:816071.KB.[LN]: How to Temporarily Deactivate the Kernel Mode
Filter DriverThe registry key that stores information for the Ofant.sys
driver is
Ofadriver.
REFERENCES
==========
For additional information, click the following article numbers to view the
articles in the Microsoft Knowledge Base:
KBLink:814112.KB.[LN]: Files on Network Shares Open Slowly or Read-Only
or You Receive an Error Message
KBLink:275555.KB.[LN]: ARCserveIT Open File Manager (Ofant.sys) May
Affect SQL Server 7.0
KBLink:821246.KB.[LN]: Office Files Are Slow to Open, Close, Save, or
Print from a Network
KBLink:816071.KB.[LN]: How to Temporarily Deactivate the Kernel Mode
Filter Driver
KBLink:252332.KB.[LN]: Event ID 3013 When You Copy Files to a Server
That Is Under Disk Stress
The third-party products that this article discusses are manufactured by
companies that are independent of Microsoft. Microsoft makes no warranty,
implied or otherwise, regarding the performance or reliability of these
products.
QUERY WORDS
===========
oplocks ofant ArcServ ARCserve ARCserveIT BrightStor performance degradation
slow intermittent sporadically srv.sys lanmanserver
freeze hangs hanging OFANT.EXE ofant.sys QAFilter.sys ofadriver CA Inoculan
McAfee NetShield 4.5 McShield Norton, OTMAN.sys OTMAN5.SYS Open Transaction
Manager, Veritas BackupExec, Gigabit
Word Excel PowerPoint Outlook Exchange MS-Office
<<\** Database Link: Type = "SolutionObject" Database = "None" Value =
"SOX030220700019" **/>>
<<\** Database Link: Type = "SolutionObject" Database = "None" Value =
"SOX030206700031" **/>>
<<\** Database Link: Type = "SolutionObject" Database = "None" Value =
"SOX030128700047" **/>>
<<\** Database Link: Type = "SolutionObject" Database = "None" Value =
"SOX020614700029" **/>>
<<\** Database Link: Type = "SolutionObject" Database = "None" Value =
"SOX000427700133" **/>>
<<\** Database Link: Type = "SolutionObject" Database = "None" Value =
"SRQ030503600120" **/>>
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Publishing Keywords : kbNTTermServ400 kbNTTermServSearch kbwin2000AdvServ
kbwin2000AdvServSearch kbwin2000Pro kbwin2000ProSearch kbwin2000Search
kbwin2000Serv kbwin2000ServSearch kbWinAdvServSearch kbWinNT400search
kbWinNTS400 kbWinNTS400search kbWinNTsearch kbWinNTSEntSearch kbWinNTSsearch
kbWinNTW400 kbWinNTW400search kbWinNTWsearch kbWinXPPro kbWinXPProSearch
kbWinXPSearch kbWinXPTabPC
Keywords : kbwinservperf kbprb kbEntireNet
Revision Type : Major
Workgroup : Server - (EntireNet) Windows 2000 [491]
Billing Product : Windows Svr 2000 EN [98927]
Original Language : EN-US
Source Language : EN-US
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--
Thank you,
Brennan Crowe
Microsoft corporation
This posting is provided "AS IS" with no warranties, and confers no rights.
