IV65725: PCONSOLE JAVA PROCESS CONSUMES INCREASING AMOUNT OF CPU

APAR status

• Closed as fixed if next.

Error description

• PROBLEM:  pconsole java process grows and consumes CPU
  
  BACKGROUND: The problem seems to be triggered by port
  vulnerability scanning. Precise requests have not been
  identified, but in each case we have seen related
  pconsole ports left in CLOSE_WAIT  with vulnerability
  scanners as the foreign hosts.
  
  DETAILS: The pconsole java process consumes increasing
  amount of CPU.
  
  This can be verified by using tprof as follows:
  
  1.  Collect trof output
  
  # LDR_CNTRL=MAXDATA=0xb0000000@DSA tprof -P all -skjue -R
  -E -f 1 -x sleep 60
  
  Process               PID      TID  Total Kernel   User
  Shared  Other
  =======               ===      ===  ===== ======   ====
  ======  =====
  java              5767168  41353249  59.26   0.24   0.00
   0.12  58.89
  
  
  2.  Verify pconsole is the java process:
  
  
  # ps -ef | grep 5767168
  
  pconsole  5767168 21299250  0 15:40:51 -  0:27
  /usr/java6/bin/java -Xmx512m -Xms20m -Xscmx10m
  -Xshareclasses <.....>launcher.jar com.ibm.lwi.LaunchLWI
  

Local fix

• 1. If you do not use IBM Systems Director Console, you
  can uninstall the fileset
  
       # installp -gu sysmgt.pconsole.rte
  
  2.  If the console is required for your environment, you
  can stop, then restart the console to
  remove the process.
  
  i)   Stop the IBM Systems Director Console for AIX server
  
       # stopsrc -s pconsole
       # lssrc -s pconsole (to verify it has stopped)
  
  ii)  Restart the IBM Systems Director Console for AIX
  server
  
       # startsrc -s pconsole
       # lssrc -s pconsole (To verify the console has
  restarted)
  

Problem summary

• 71J in stopship mode and this not a high priority case
  

Problem conclusion

Temporary fix

Comments

• This APAR is being closed FIN. This means that a solution to
  this APAR is expected to be delivered from IBM in a release
  (if any) to be available within the next 24 months.
  

APAR Information

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

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

  IV72619 IV72663

Fix information

• Fixed component name

  AIX V7.1

• Fixed component ID

  5765H4000

Applicable component levels

• R710 PSY

     UP