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3338534 - NVM_ALLOCATED_SIZE persistent memory consuming the GLOBAL_ALLOCATION_LIMIT on HANA

Symptom

Resource Container Shrinks and memory pressure are occurring, you notice 'NVM_ALLOCATED_SIZE' space is much larger than 'AB' (Allocated bytes by allocators for heap and stacks).

e.g.
IPMM short info:
GLOBAL_ALLOCATION_LIMIT (GAL) = 972.74gb (1044479148032b), SHARED_MEMORY = 20.74gb (22276599808b), CODE_SIZE = 3.56gb (3830210560b), NVM_ALLOCATED_SIZE = 774.61gb (831733710848b), OOM_RESERVATION_ALLOCATOR_SIZE = 96.14mb (100810752b)
PID=12674 (hdbindexserver), PAL=972.87gb (1044613365760b), AB=162.73gb (174735241216b), UA=0, U=150.95gb (162085162541b), FSL=0b, FMC=0b
[Some processes may have been skipped]
Total allocated memory= 971.06gb (1042668449792b)
Total used memory     = 956.38gb (1026912509163b)
Sum AB                = 184827928576
Sum Used              = 169071987947
Heap memory fragmentation: 1
Top "M_HEAP_MEMORY" allocators (component, name, size). Ordered descending by inclusive_size_in_use.
 1: System:                                     /                                                                    153.80gb (165147820401b)
 ...
Process: AB=162.73gb (174735241216b), U=153.80gb (165147820401b), fragmentation=5%.       
"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."           


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    Environment

    • SAP HANA , Platform Edition 2.0       

    Product

    SAP HANA, platform edition 2.0

    Keywords

    NVM_ALLOCATED_SIZE,  ResourceContainerShrink.cpp, TraceContext.cpp, GLOBAL_ALLOCATION_LIMIT, Total used memory, Increment NVM memory size for allocations. , KBA , HAN-DB , SAP HANA Database , HAN-DB-ENG , SAP HANA DB Engines , How To

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