So many socket connections in FIN_WAIT_1 state

Discussion in 'Server Networking' started by Ankur Desai, Jan 24, 2004.

  1. Ankur Desai

    Ankur Desai Guest


    I have unique problem.. we have third party streaming
    server application for mobiles (its a CDMA network).. that
    streams video content to mobile..
    It was running fine but
    After applying security patch (hotfix KB823980) this
    application started taking 100% CPU ...
    when i investigated the problem .. i found that
    there are lot many TCP Connections remain in FIN_WAIT_1
    state and so the Application has to go through all the
    connections while establishing a new socket for a new user
    hence taking more CPU ..
    Its a real time application..
    Since Application is closing the socket properly .. and
    connections are in the FIN_WAIT_1 state .. its
    responsibiliy of OS to clean up the connections ( it seems
    from the system that connections are not timing out in
    FIN_WAIT_1 state).. I suspect the security patch has done
    something wrong with the TCP/IP Implementation on OS.. But
    i am not able to figure out the exact problem...

    Can anybody throw some light on this..

    We have 11 Windows 2000 advance server running with
    streaming application.. all are load balanced by NLBS ..FYI

    Ankur Desai, Jan 24, 2004
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