[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference lassie::ucx

Title:DEC TCP/IP Services for OpenVMS
Notice:Note 2-SSB Kits, 3-FT Kits, 4-Patch Info, 7-QAR System
Moderator:ucxaxp.ucx.lkg.dec.com::TIBBERT
Created:Thu Nov 17 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:5568
Total number of notes:21492

5431.0. "ucx$ucp.exe crashing system ucx4.1 eco4" by CSC32::J_DRIGGERS () Fri Apr 11 1997 13:35

    Customer running openvms 6.2 on an alpha with UCX 4.1.
    They installed eco4 and ucx$ucp.exe image crashes system.
    This has happened several times and local area software analyst was
    brought in who discovered the ucx$ucp.exe as the active process when
    the crash occured.
    
    After taking eco4 off and running baseline 4.1, the crashes have
    stopped.
    
    System is alos running mailworks, they have several machines running
    4.1 eco4 but this one was the only system running mailworks.
    
    Anyone out there seen this problem? Any ideas why it is crashing?
    
    Yes, mailworks is at the latest version.
    
    Thanks,
    Johnny
    CSC
T.RTitleUserPersonal
Name		DateLines
5431.1IPMT case number? Dump file location?LADDIE::TIBBERTLee Tibbert, DTN 226-6115Fri Apr 11 1997 17:4314
Since this is a customer problem of some urgency, I 
suggest that you IPMT the case so that it gets
addressed formally.  I suspect that the first
thing that a maintainer will ask for is a 
system dump from the time of the crash.

I hope this helps cut down the cycle time for
your customer.  The longer
the time to an IPMT, with proper supporting evidence,
the longer the time to a fix.  (I think I'm going
to can that text and start using it as my signature ;-))

Lee
5431.2UCXAXP::KIMMELFri Apr 11 1997 19:4712
    It should be easy to narrow this one down a little bit more.
    
    First - the ucx$ucp image can't crash the system - because it's not
    privileged.  There is nothing that this image does which would cause
    it to be in some active state for any length of time.
    
    Could something that UCP call crash the system?  Sure thing.
    What I'm trying to get at here is - if it's crashing the system - it
    is probably happening during a UCX startup or shutdown.
    
    Perhaps doing a $SET VERIFY and getting a log of the action would
    help.
5431.3ASTDEL: Module:UCX$BGDRIVER/Offset:44774 ???VIRGIN::BASSIMon Apr 14 1997 09:1925
 Hi Johnny,


 check whether customer configured an illegal-big value for the minimum number
 of small/large buffers:

   UCX> SHOW CONFIG COMM

                        
       MINIMUM           ETHERNET             FDDI
  --------------------------------------------------
    Small Buffers        127                  127 
    Large Buffers        31                   13


 If this is the case then:

   UCX> SET CONFIG COMMUNICATION /LARGE=(MIN:nnn)/SMALL=(MIN:nnnn)
   $REBOOT


 Best regards.

  Gianbattista