IBM Support

IV58470: NETWORK PERFORMANCE DEGRADATION ON FC5899 (AUSTIN) ADAPTER APPLIES TO AIX 6100-09

A fix is available

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • A network performance degradation occurs on FC5899
    adapter.
    
    The problem is that missing interrupts occur for
    receiving
    packets.
    The delay becomes more than 100msec for each packet and
    retransmissions occur.
    The packets remain in the adapter, and they are handled
    when another interrupt for another packet is raised.
    

Local fix

Problem summary

  • A network performance degradation occurs on FC5899
    adapter.
    
    The problem is that missing interrupts occur for
    receiving packets.  The delay becomes more than 100msec for
    each packet and retransmissions occur.
    The packets remain in the adapter, and they are handled
    when another interrupt for another packet is raised.
    

Problem conclusion

  • Code changed so that the interrupt is generated by adapter
    whenever there are packets to be processed by the host.
    

Temporary fix

Comments

  • 6100-07 - use AIX APAR IV58709
    6100-08 - use AIX APAR IV58647
    6100-09 - use AIX APAR IV58470
    6100-09 - use AIX APAR IV58470
    6100-09 - use AIX APAR IV58470
    7100-01 - use AIX APAR IV55757
    7100-02 - use AIX APAR IV58698
    7100-03 - use AIX APAR IV58687
    7100-04 - use AIX APAR IV58611
    

APAR Information

  • APAR number

    IV58470

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-04-01

  • Closed date

    2014-04-01

  • Last modified date

    2016-05-10

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

    IV55757

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

    U866351

Fix information

  • Fixed component name

    AIX 610 STD EDI

  • Fixed component ID

    5765G6200

Applicable component levels

  • R610 PSY U866351

       UP14/05/21 I 1000



Document information

More support for: AIX Standard Edition

Software version: 610

Operating system(s): AIX

Reference #: IV58470

Modified date: 10 May 2016