Re: Very slow accessing network drive to 2003 server from Windows XP Pro SP3, fast from Win 2k
- From: Chris <chris@xxxxxxxxxxxxxxxxxx>
- Date: Mon, 09 Nov 2009 09:26:27 -0700
Just found that if I disable "Interrupt Moderation" on the network adapter it resolves the issue.
With Interrupt Moderation on, I would get 4% network bandwidth. Turning it off made it jump to 30%. Seems good now.
Thanks,
Chris
Chris wrote:
We have an application that performs very poorly on Windows XP when it's on a 100mbit network connection. The same application performs great on Windows 2000 with a 100mbit network connection. If I put the XP station on a gigabit connection it performs well, but I don't have enough gigabit ports..
I did a packet capture during the issue on both 100mbit and gigabit. In the 100mbit capture there were a whole bunch of:
SMB:C; Nt Transact, NT NOTIFY_CHANGE, FID = 0x8009 (NULL@#139)
SMB:R; Nt Transact, NT NOTIFY_CHANGE, FID = 0x8009 (NULL@#139)
These were not present in the capture when connected via gigabit ethernet.
I've attached a text file with that portion of the packet capture.
I found this KB article, which looked like it related to my issue:
Windows XP May Cause Extra SMB Notify Change Traffic
http://support.microsoft.com/kb/330929
I made the changes to the registry, but it did not help.
The client is Win XP Pro SP3, server is Win 2003 32-bit Standard SP1. They are both on the same subnet and no routing is involved.
Please help!
-Chris
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