IJ51961: NUMBER OF ALLOCATIONS SHOWN IN NEGATIVE

APAR status

• Closed as program error.

Error description

• When you execute  mmdiag --memory the number of
  allocations
  
  will be shown in negative
  
  Statistics for MemoryPool id 2 ("Shared Segment")
     27650488272 bytes in use
     32641128850 hard limit on memory usage
     34352508928 bytes committed to regions
            7865 number of regions
     -1956065933 allocations
       102951952 frees
     -2064121769 allocation failures
  

Local fix

Problem summary

• Inside GPFS daemon, the variable that represents number of
  allocations is integer type which could overflow in large
  system. As a result of it, some statistics are shown in
  negative.
  

Problem conclusion

• This problem is fixed in 5.1.9.9
  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:
  /usr/lpp/mmfs/bin/mmdiag or /usr/lpp/mmfs/bin/mmfsadm will
  display the number of allocations correctly.
  
  Work around:
  none
  
  Problem trigger:
  run "/usr/lpp/mmfs/bin/mmdiag --memory" or
  "/usr/lpp/mmfs/bin/mmfsadm dump alloc" in highly loaded system.
  
  Symptom:
  Error output/message
  
  Platformr affected:
  ALL Operating System environments
  
  Functional Area affected:
  Admin Commands (mmdiag and mmfsadm)
  
  Customer Impact:
  Suggested
  

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 STD

• Fixed component ID

  5737F33AP

Applicable component levels