IC99891: WHEN VP_MEMORY_CACHE_KB IS ENABLED, DRAINABLE POOLS CAN HOLD ONTO MORE FREE MEMORY THAN IF IT IS DISABLED

APAR status

• Closed as program error.

Error description

• When using the VP_MEMORY_CACHE_KB feature, there appears to be
  more strict restrictions around when memory is freed back to a
  pool, if that memory can then be drained from the pool (and
  either be returned to the vp cache or back to the global free
  memory block list).
  
  This can lead to pools that have much larger total sizes than
  used sizes (so you could see large sizes for a pools total size,
  but you also see only a small portion of the memory in that pool
  is used, which means it has a large amount of free memory in the
  pool, which could possibly be drained from the pool and given
  back to the rest of the instance).
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * all users                                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Update to IDS-11.70.xC9                                      *
  ****************************************************************
  

Problem conclusion

• Problem Fixed In IDS-11.70.xC9
  

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

  INFORMIX SERVER

• Fixed component ID

  5725A3900

Applicable component levels

• RA10 PSN

     UP