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Conference azur::mcc

Title:DECmcc user notes file. Does not replace IPMT.
Notice:Use IPMT for problems. Newsletter location in note 6187
Moderator:TAEC::BEROUD
Created:Mon Aug 21 1989
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:6497
Total number of notes:27359

2617.0. "Historian stops the machine" by ZUR01::SCHNEIDERR () Tue Mar 24 1992 06:10

Hello,

Some weeks ago I entred note 2261. There I described how historian with polling
some counters completly slows down the VAX. Till now I heard nothing from
nowhere in the hole big world. 

Realy no experience out there?

With our very slow machine we have so much problems (We think some synchronisation
problems in DECmcc). We have funny messages, alarms stop, DECmcc stops, VMS 
crashes, and so on.
Are there some recommondations how many entities we can poll and how many alarms
we can run and how many users can use DECmcc on what a kind of machine with how 
many memory.

I can't belive that in the small Switzerland this customer uses DECmcc the most
hard in the world.




Roland 
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2617.1ZUR01::SCHNEIDERRThu Mar 26 1992 08:117
I see, no experience, no recommondations and nobody have seen such a problem.

I try it in an other way: What machines are you using? Have anyone tried to
enable 300 alarms or more? Does anyone use historian?


Thanks in advance for your replies   Roland
2617.2More information soonTOOK::MINTZErik Mintz, DECmcc Development, dtn 226-5033Thu Mar 26 1992 10:186
From an engineering point of view, we know that these operations
are very memory intensive, and that often causes problems.
We are trying to improve the number of concurrent alarms/recordings/exports,
and perhaps more importantly, trying to characterize the behavior.

-- Erik
2617.3Thanks for the replyZUR01::SCHNEIDERRTue Mar 31 1992 05:327
Erik,

I just returned to the office....Thanks a lot for the reply. I will keep waiting
"MORE INFORMATION SOON"


Roland