IZ80952: MBIND FAILURES WITH JAVA ON LINUX

APAR status

• Closed as program error.

Error description

• Error Message: # java -version
  mbind: Invalid argument
  mbind: Invalid argument
  mbind: Invalid argument
  java version '1.6.0'
  Java(TM) SE Runtime Environment (build
  pxp6460sr7-20091207_02(SR7))
  IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux ppc64-64
  jvmxp6460sr7-20091204_48683 (JIT enabled, AOT enabled)
  J9VM - 20091204_048683
  JIT  - r9_20091123_13891
  GC   - 20091111_AA)
  JCL  - 20091202_01
  .
  Stack Trace: N/A
  .
  

Local fix

Problem summary

• Problem exposes when a Linux box is configured with
  non-contiguous nodes. When JVM is enabled with numa support,
  call to numa_all_nodes always returns the nodes starting from
  node0 till the highest node_ID. This way the nodes that are not
  really available are also being considered and is causing the
  mbind error.
  

Problem conclusion

• This defect will be fixed in:
  6.0.0 SR8
  5.0.0 SR12
  Problem is addressed in such a way that the nodes returned from
  numa_all_nodes are validated for their availability and
  constructs the correct set from numa_all_nodes.
  .
  To obtain the fix:
  Install build 20100213 or later
  

Temporary fix

Comments

APAR Information

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

  IZ69890

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

Fix information

• Fixed component name

  JAVA 5 J9 COMMO

• Fixed component ID

  620500127

Applicable component levels

• R500 PSN