IJ54655: NUMAMEMORYINTERLEAVE NOT ACTIVATED ON SCALE 5.2. CREATED CLUSTER

APAR status

• Closed as program error.

Error description

• By default, clusters created with version 5.2.0 or later
  have the numaMemoryInterleave value set to yes.
  This should start Storage Scale daemon with interleave
  memory policy, but it does not.
  
  Reported in: 5.2.1.1.
  

Local fix

Problem summary

• By default, clusters created with version 5.2.0 or later have
  the numaMemoryInterleave value set to yes. This should start
  Storage Scale daemon with interleave memory policy, but it does
  not.
  

Problem conclusion

• This problem is fixed in 5.2.3.1
  To see all Spectrum Scale APARs and their respective
  Fix solutions refer to page: 
  https://public.dhe.ibm.com/storage/spectrumscale/spectrum_scale
  _apars.html
  
  Benefits of the solution:
  Correct default interleave memory policy
  
  Work Around:
  Explicitly set numaMemoryInterleave=yes using mmchconfig
  command.# mmchconfig numaMemoryInterleave=yes
  
  Problem trigger:
  This issue affects customers running Storage Scale in Linux NUMA
  environment and the Storage Scale clusters created with version
  5.2.0 or later.
  
  Symptom:
  Performance Impact/Degradation
  Unexpected Results/Behavior
  
  Platforms affected:
  ALL Linux OS environments
  
  Functional Area affected:
  All Scale Users
  
  Customer Impact:
  High Importance
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  SPEC SCALE DME

• Fixed component ID

  5737F34AP

Applicable component levels