PH24265: ALLOW MPMSTATS TO WRITE TO ZOS SYSTEM LOG

APAR status

• Closed as new function.

Error description

• Allow mpmstats to write to zOS system log
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM HTTP Server on z/OS        *
  ****************************************************************
  * PROBLEM DESCRIPTION: mod_mpmstats cannot write to the z/OS   *
  *                      system log                              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  mod_mpmstats cannot write to the z/OS system log when
  maxclients is approaching/reached
  

Problem conclusion

• Global directive "MPMStatsSystemLog ON" was added which
  causes critical messages to be written to the z/OS system
  log:
  
   The message has the following format:
  
          BPXM023I ($USERID) CRIHS0004W $JOBNAME mpmstats:
  approaching MaxClients ($THREADSUSED/$MAXCLIENTS)
          BPXM023I ($USERID) CRIHS0005W $JOBNAME mpmstats:
  reached MaxClients ($THREADSUSED/$MAXCLIENTS)
  
       When the condition is cleared, a similar message with
  CRIHS0006I is issued.
  
  Two additional improvements were made for the traditional
  usage:
  
  For each "approaching MaxClients" message issued, log a
  similar message when the condition is cleared.
  
  Add MPMStatsBusyThreshold to allow the "approaching
  MaxClients" message to be issued at thresholds other than
  the default of 90%.
  
  The fix for this APAR is targeted for inclusion in IBM HTTP
  Server fix packs 8.5.5.18 and 9.0.5.5. For more information,
  see 'Recommended Updates for WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

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

  WAS IHS ZOS

• Fixed component ID

  5655I3510

Applicable component levels