IBM Support

PI27222: SNMP agent consumes more than 50 % CPU

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • SNMP Agent installed to query PMI data.
    The agent is installed correctly as Generic Server.
    With an SNMP Browser we can connect to the agent and query OID.
    When we Query actual PMI data, CPU spikes to 50 % or more
    
    Javacore shows the following,
    java.io.BufferedReader.readLine(BufferedReader.java:373)
       ip=0x000007FFFF558EDB/sp=0x11226ED8:
    com.ibm.ws.pmi.snmp.agent.SNMPAgentServer.interactive(SNMPAgentS
    erver.java:577)
       ip=0x21B61F2D/sp=0x11226F10:
    com.ibm.ws.pmi.snmp.agent.SNMPAgentServer.main(SNMPAgentServer.j
    ava:528)
    Native Thread: 16320
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: SNMP agent server consumes high cpu.    *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    SNMP agent server is consuming high CPU when it starts
    successfully. This is due to the internal feature of SNMP
    which enables interactive mode for the SNMP server. This
    interactive mode was responsible for high cpu consumption.
    

Problem conclusion

  • The code has been modified to fix this. With this fix the SNMP
    agent server will not go in interactive mode by default and so
    avoid the high cpu consumption scenario.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 8.5.5.5.  Please refer to the Recommended Updates
    page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI27222

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-10-08

  • Closed date

    2014-12-16

  • Last modified date

    2014-12-16

  • 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

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

Applicable component levels

  • R850 PSY

       UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.5","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022