Symptom
We see high utilization in QFP DRAM, being it allocated mostly by CVLA component, and we need to reserve at least 50M memory to system making it stable; Refer to below outputs.
Router#show platform resources
**State Acronym: H - Healthy, W - Warning, C - Critical
Resource Usage Max Warning Critical State
----------------------------------------------------------------------------------------------------
ESP0(ok, active) H
QFP H
DRAM 217997KB(83%) 262144KB 85% 95% H
IRAM 414KB(20%) 2048KB 85% 95% H
CPU Utilization 54.00% 100% 90% 95% H
Router#show platform hardware qfp active infrastructure exmem statistics
QFP exmem statistics
Type: Name: DRAM, QFP: 0
Total: 268435456
InUse: 227329024
Free: 41106432
Lowest free water mark: 41106432
Router#show platform hardware qfp active infrastructure exmem statistics user
...
Type: Name: GLOBAL, QFP: 0
Allocations Bytes-Alloc Bytes-Total User-Name
-------------------------------------------------------------------------------
...
106 86144640 86216704 CVLA
Conditions
Platform with 256MB exmem memory ( and while CVLA consumes all the memory and leave only 25MB.ex
Observed in ISR4331
Workaround
Wait will CVLA release the memory back to exmem
