Memory Utilization report is not correct

Products

• CA Performance Management
• Network Observability

Issue/Introduction

 

 

 

For some Routers the PM report show an incorrect memory utilization like this:

 

On Spectrum:

 

PM Report by components:

 

Environment

Performance Management Release : 3.7

Cause

The memory reserved and image are typical of the device operating system very similar to / proc on unix; they will always be 100%.

Resolution

DC Debug show:
Item ID=543846, Name=MemoryPool processor 1
Item ID=543847, Name=MemoryPool reserved 6
Item ID=543848, Name=MemoryPool image 7

 

Vertica query:
drdata=> select to_timestamp(tstamp), item_id, im_utilization from dauser.physical_memstats_rate where item_id in (543846,543847,543848) and tstamp >= 1585044000 and tstamp <= 1585044900 order by 1,2;
    to_timestamp     | item_id |  im_utilization
---------------------+---------+------------------
2020-03-24 07:00:00 |  543846 | 37.4785061258428
2020-03-24 07:00:00 |  543847 |              100
2020-03-24 07:00:00 |  543848 |              100
2020-03-24 07:05:00 |  543846 | 37.4785061258428
2020-03-24 07:05:00 |  543847 |              100
2020-03-24 07:05:00 |  543848 |              100
2020-03-24 07:10:00 |  543846 | 37.4785061258428
2020-03-24 07:10:00 |  543847 |              100
2020-03-24 07:10:00 |  543848 |              100
2020-03-24 07:15:00 |  543846 | 37.4785061258428
2020-03-24 07:15:00 |  543847 |              100
2020-03-24 07:15:00 |  543848 |              100
(12 rows)

 

The average from Vertica query is 79% like the NetOps Portal report because the gauges are all Memory components being aggregated together across the entire time range so the report is correct

 

 

 

 

 

 

 

 

 

 

 

Additional Information

Article Id: 33163 - How to collect logging for interface data issues in Performance Management
https://ca-broadcom.wolkenservicedesk.com/external/article?articleId=33163