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TCP Chimney offload

On Windows 2003 Enterprise Edition Service Pack 2 TCP Chimney was enabled by default. It took me a while to discover this feature. But once I did find it , I turned it off.

It was causing numerous problems on many applications , particularly modelling based , long running SQL Server transactions.  I also experienced problems with Microsoft Exchange.

Windows 2008 still has the TCP chimney offload functionality but the command syntax has changed.  On the article there is a command that shows the status & it seems that the chimney is disabled by default anyway.


The script to disable tcp chimney is :


netsh int tcp set global chimney=DISABLED


Posted by Jason Brimhall on 4 October 2011

I have also seen the chimney to negatively impact SSRS

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