Memory Utilization report is not correct
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Article ID: 187580
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Updated On:
Products
CA Performance Management - Usage and Administration
DX NetOps
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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
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