CUCM 9.X - 11.X: Perfmon Limitations

[Cole.Aten]

We are currently looking into CUCM to identify what limitations we would have in polling via the perfmon API.

In the CUCM documentation for 9.X(http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/devguide/9_1_1/xmldev-911/serviceability.html#wp1059283), we see limitations in the form of

enterprise parameters:
-Allowed Performance Queries Per Minute
-Allowed Device Queries Per Minute
-Maximum Performance Counters Per Session

In the Cisco devnet site, which was released roughly around version 10, we don't see any listing of limitations in regards to limitations / best practices like we see in the documentation listed for 9.X. are these enterprise parameters still the limitations?
-https://developer.cisco.com/site/sxml/documents/api-reference/perfmon/

Furthermore, In CUCM we do not see a parameter for max number of sessions allowed for performance polling. is there any limitation for this or not?

Any additional information would be great. Thanks!

[caten]

I tested the Maximum Performance Counters Per Session parameter in my lab. I used a script that was developed to gather every instance of every counter and return their values. Here is what I see:

cat output_8X.txt | grep 'CStatus' | wc -l

4197

cat output_9X.txt | grep 'CStatus' | wc -l

4577

cat output_10X.txt | grep 'CStatus' | wc -l

15623

It seems that this parameter is a soft limitation, but I am still unsure. Any ideas?