Re: troubles stopping ldm with ldmadmin on linux (fwd)

===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================

---------- Forwarded message ----------
Date: Wed, 17 May 2000 15:15:23 -0600 (MDT)
From: D. J. Raymond <address@hidden>
To: address@hidden
Subject: Re: troubles stopping ldm with ldmadmin on linux

I also see this on my Debian Linux box.  I suspect that the processes
 won't die until some crucial I/O is done -- probably a good thing!
 Why it takes longer on Linux than on Solaris, I do not know.  Maybe
 it is a matter of writing stuff from virtual memory to disk, which
 could take a long time if, say, 50 MB or so of the product queue were
 memory mapped.  The time to die is quite variable -- if the ldm has
 just been started, the processes die quickly, but if it has been
 running for a while, they take longer.

Dave Raymond

--text follows this line--
   Organization: UCAR/Unidata
   Keywords: 200005172004.e4HK4k408694
   Date: Wed, 17 May 2000 16:04:44 -0400 (EDT)
   From: Jeff Masters <address@hidden>
   cc: address@hidden
   Content-Type: TEXT/PLAIN; charset=US-ASCII
   Sender: address@hidden
   Precedence: bulk


   I have the same trouble on my Slackware linux boxes, my pqexpire and some
   of my rpc.ldmd processes don't die for many minutes.  I find that even a
   manual kill -9 to the slow-to-die rpc.ldmd and pqexpire jobs will not make
   them exit, you just have to wait up to 8 minutes for them to die. On our
   Solaris box, everything exits immediately. 

   
------------------------------------------------------------------------------
    Dr. Jeff Masters (address@hidden)                           (  )  
    Chief Meteorologist                              /\ Home of the       (    
) 
    The Weather Underground, Inc.               /\  /  \  /\       /\    (      
)
    P.O. Box 3605                              /  \/    \/  \ /\  /  \    ------
    Ann Arbor, MI 48106-3605            ______/              /  \/    \_   \\\\\
    734-994-8824 (voice)                           Weather Underground      
\`\`\
    734-994-8919 (fax)                         http://www.wunderground.com


   On Wed, 17 May 2000, Devin Kramer wrote:

   > Doug,
   > 
   > Although a minute or so is a bit long I don't think it is strange to see
   > some of the rpc.ldmd children hanging on after a stop.  I believe b/c
   > some of these  are UDP connections they will not necessarily die
   > instantly.  I could have the TCP and UDP thing backwards but I could
   > swear that one or the other suffers from this.   I see it on our Solaris
   > 2.6 box quit often. Our wait time is more like 10-15 seconds but we
   > often find we need to wait a bit between ldmadmin stop's and ldmadmin
   > start's  or it will just hang.  If as you say it is more like minutes
   > then maybe there is some other issue.
   > 
   > my $.02
   > Devin
   > 
   > --
   > --------------------------------------------------------
   > Programmer Analyst    Department of Atmospheric Science
   > University of California Los Angeles
   > PH:(310)825-2418 FAX:(310)206-5219
   > http://www.atmos.ucla.edu/geninfo/comp/how_to.html
   > --------------------------------------------------------
   > 
   > 
   >