Re: TEMS Startup and Shutdown Timing

Not really practical at the moment. The TEMSes have a 3 minute heartbeat 
with a 3 minute grace time added. There are two attempts made to avoid 
false detections. At the same time, the remote TEMS need to detect and 
switch and if they try too early, they switch back to base. And there are 
interior timeouts. And then they have to do full synchronization 3 big 
tables. In one case I studied it could take 5-6 minutes just to 
synchronize one large TNODELST table.

All in all a fallback naturally takes 20-25 minutes to stabilize.

During startup, the hub TEMS is beaten up pretty badly by the TEPS - 
massive spike as they synchronize. The remote TEMS recognize a 
reconnection and have to synchronize 3 large tables and that takes quite a 
while as above.

At shutdown, two major issues were resolved at ITM 622 FP3/FP4 but it 
still isn't fast. The fixes involved not accepting new work. One oddity, 
it can take 10+ minutes for a hub TEMS to shutdown on Linux/Unix but on 
Windows it is often 3-5 minutes,

So 1 minute targets... you need a 10-20 times improvement and that is not 
likely to happen unless there is some concerted Development activity. So 
open a RFE and start pushing Sales:

Tivoli Request For Enhancement (RFE)
http://www.ibm.com/support/docview.wss?uid=swg21449404  [announcement]
http://www.ibm.com/developerworks/rfe/tivoli/ 

Regards, 

  



John Alvord - Ph: 1-720-396-2788    Cell: none 
Customer Support - Tivoli Software - jalvord-r/[email protected]
Advisory Engineer - Tivoli Monitoring - ITM infrastructure
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From:   Gregory Mendes <[email protected]>
To:     "[email protected]" <[email protected]>, 
Date:   04/30/2013 05:09 AM
Subject:        [TME10] TEMS Startup and Shutdown Timing
Sent by:        [email protected]



Hello All,
 
Just had to ask this question.  I know most of you will ask, "why"? 
However, I have to check to make sure it can't/can be done.  I've checked 
the config files for the TEMS and don't see where I can make the TEMS 
cycle or failover faster than 60 seconds.
 
Has anyone configured a TEMS to shutdown, startup or failover faster than 
60 seconds?
 
 
Regards,

Gregory R. Mendes
Tivoli Architect/Tools Specialist
Mendes, Inc.
Tivoli Monitoring 6.2.3 Certified
770-317-8593
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