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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

2892.0. "Performanceanalyzer pollingtime equal duration" by ZUR01::SCHNEIDERR () Thu Apr 30 1992 05:08

We found the following problem:

We created some alarms under V1.1 on performance data (error percent). We choosed
the pollingintervall 1/2 hour and the duration 1/2 hour, too. Now we saw that
not all pools work. From tima to time realy all alarms, every 1/2 hours occures
and from time to time only each second alarm occures.
Is it not allowed to choose pollinintervall and duration to the same value? Or
whats happen?

Roland
T.RTitleUserPersonal
Name
DateLines
2892.1Make duration smaller than poll intervalTOOK::ANWARUDDINAnwarThu Apr 30 1992 10:4712
It is recommended that the duration be slightly smaller than the polling interval. 
This was true is Performance analyzer V1.1 also and is documented in the Release 
notes. The reason for this is that the if time of completion of one request exceeds
the start time of the next request - this could be due to the system being heavily 
loaded or the network being busy or overhead in the PA, the next request will not be 
scheduled but the subsequent request will be. 

Making the duration slightly smaller than the polling interval (by 10-15 secs) will
alleviate the problem but will not completely solve it.

Hope this helps.