Question

Slow file access on Server 2008 file server

Asked by: Quetzal

Server 2008 Standard SP1.  Access files from Server 2003 Terminal Services.  Case in point...Open Excel file from Server 2003 file server and it opens in 1 sec.  Open same file from Server 2008 file server and takes 5 sec.  All servers located on same subnet.

Using Symantec EndPoint Protection on both file servers.  Disabled AV on Server 2008 and no effect.  Firewall disabled and no effect.  TCP Offload disabled (see attached file) and no effect.  Using Broadcom BCM5709C NetXtreme II GigE (see current NIC settings in attached file).

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Asked On
2009-10-19 at 09:39:11ID24824155
Topic

Windows Server 2008

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Answers

 

by: dariusgPosted on 2009-10-19 at 10:54:19ID: 25607395

Remove SEP disabling doesn't allow for a good test. SEP has been causing issues with Windows 2008 servers.

http://support.microsoft.com/kb/968991

Please post ipconfig /all

 

by: QuetzalPosted on 2009-10-19 at 11:44:03ID: 25607835

WRT SEP.  So, you think I need to uninstall SEP and then test?

WRT I/OAT.  This server is a Dell PowerEdge R710.  How do I know if it supports I/OAT?

Ipconfig posted in attachment.

 

by: dariusgPosted on 2009-10-19 at 13:38:51ID: 25608791

Removing SEP will allow you to fully test the server. I would even download the cleanwipe tool.

 

by: QuetzalPosted on 2009-10-28 at 16:27:31ID: 25689304

Weve had an interesting development.

A few days ago on a different Server 2003 file server, we found that after applying windows updates  we were getting periodic System event log entries for ID 4 Source SRTSP, ID 5 Source SRTSP, ID 20 Source SRTSPL (Symantec Endpoint protection).  All of our servers are using SEP.  Then we began to get System event log entries for ID 2020 Source SRV The server was unable to allocate from the system paged pool because the pool was empty.   This afternoon, users began to receive various errors that also included Not enough server storage available to process this command.  We made the changes shown below.

Because we were concerned that some one(s) of the Windows updates were the trigger for this event, we proactively made the same registry changes to all of the servers, including Svr09, which is the slow file server; even though none of the servers were yet showing the same symptoms.  The following day after rebooting Svr09, file access seems to be as fast as from the old Server 2003 file server.  And that is with the old/original TCP/IP parameter settings.

Response to Not enough server storage&
Per KB177078  suggests the creation of an IRPStackSize key, which was created and set to 30.

Response to ID 2020 Source SRV
KB312362 suggests the creation of a PoolUsageMaximum, which was already created and we set to 50 and the creation of PagedPoolSize which was set to 0xffffffff.

 

by: dariusgPosted on 2009-10-29 at 06:00:54ID: 25693099

So, SEP seems to have a conflict with some Windows Updates but SEP does cause network communication issues with Windows 2008 server so be careful

 

by: QuetzalPosted on 2009-11-02 at 06:05:53ID: 25719339

In the course of resolving this issue, I've also learned that there are issues with netsh on Server 2008.  Two common changes MS often recommends with network issues is to turn off TCP Chimney Offload and Receive Side Scaling.  In Server 2008, it is recommended to do this with netsh, as well as disabling the features on the nic.

http://support.microsoft.com/kb/967224 documents Incorrect registry values from netsh command.    In other words, when you make these changes with netsh, you end up with TCP parameters that are set to incorrect values or values that are sub-optimal.

We also fixed these reg key parameters.

20120131-EE-VQP-002

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