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Conference virke::mrmemo

Title:	VAX MAILGATE for MEMO

Moderator:	STKHLM::OLSSON

Created:	Sat Feb 25 1989
Last Modified:	Tue May 14 1996
Last Successful Update:	Fri Jun 06 1997
Number of topics:	216
Total number of notes:	933

149.0. "MRMEMO falls asleep !" by EEMELI::ALADIN () Mon Sep 21 1992 11:51

    
    Hey, MEMO people !
    
        Our customer VTKK told that they have recognized a problem in the
        MRMEMO server. The server seems to go asleep sometimes, i.e. it
        doesn't
        recognize incoming MR messages to be forwarded to MEMO.
        When this occurs the queue of messages starts to grow but MRMEMO
        does not seem to wake up. After this the mrmemo server becomes
        also unavailable for incoming memo messages. No error logging
        has been found. After they restart the MRMEMO server everything
        works fine again.
    
    	Any suggestions on what might be the problem or how to get
    	more info ?
    
        Hey Jan-Erik
    
    	PS. The Patch from previously (Note 139) seems to be working 
    	now ! Thanks again for your help !

T.R Title User Personal
Name Date Lines

149.1 Need some more info STKHLM::OLSSON Anders Olsson, SIP Sweden Mon Sep 21 1992 14:30 38

T.R	Title	User	Personal Name	Date	Lines
149.1	Need some more info	STKHLM::OLSSON	Anders Olsson, SIP Sweden	`Mon Sep 21 1992 14:30`	38
	Hello Jan-Erik! .0> The server seems to go asleep sometimes How often is "sometimes"? Does it happen completely randomly or has the server always been running for some time before it "goes asleep"? What does MRMMan> SHOW have to say about the server when it hangs? Even if there is no message in the log file from the time of the hang, are there any messages at all in the log file (indications of problems during the server lifetime)? I have heard of a similar problem at another site where the server would hang after some time (a couple of days or weeks). There was no reason found for the hang there and they are now periodically restarting MRMEMO to avoid the problem. I have a hunch that the reason could be a memory (or some other resource) leak that eventually exhausts the resource and causes the hang. If your (VTKK's) server never hangs when it is recently started - only when it has been running some time, you might have the same situation. In that case, it would be interesting to know: - Approximately how many messages flows through the server per day? - How long time does the server run before it hangs? - What does DCL> SHOW PROCESS/QUOTAS/ACCOUNTING say about the server process (MRMEMO Server n) when the server a) Is recently started b) Hangs Have these problems started recently or has it always been a problem but has not been reported until now? Maybe the server hasn't been able to stay up long enough before to reach this state :-) Anders

    Hello Jan-Erik!

.0> The server seems to go asleep sometimes

    How often is "sometimes"?  Does it happen completely randomly or
    has the server always been running for some time before it "goes
    asleep"?

    What does MRMMan> SHOW have to say about the server when it hangs?

    Even if there is no message in the log file from the time of the hang,
    are there any messages at all in the log file (indications of problems
    during the server lifetime)?

    I have heard of a similar problem at another site where the server
    would hang after some time (a couple of days or weeks). There was no
    reason found for the hang there and they are now periodically
    restarting MRMEMO to avoid the problem.

    I have a hunch that the reason could be a memory (or some other resource)
    leak that eventually exhausts the resource and causes the hang.

    If your (VTKK's) server never hangs when it is recently started - only
    when it has been running some time, you might have the same situation.
    In that case, it would be interesting to know:

      - Approximately how many messages flows through the server per day?
      - How long time does the server run before it hangs?
      - What does DCL> SHOW PROCESS/QUOTAS/ACCOUNTING say about the server
	process (MRMEMO Server n) when the server
	  a) Is recently started
	  b) Hangs

    Have these problems started recently or has it always been a problem but
    has not been reported until now? Maybe the server hasn't been able to
    stay up long enough before to reach this state :-)

    Anders