IBM Support

IV57259: NETWORK PERFORMANCE DEGRADED WHEN SACK IS ENABLED APPLIES TO AIX 7100-02

A fix is available

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Network performance is degraded when SACK is enabled.
    With default memtrace levels, component trace logs once
    for
    every single packet sent out via TCP.
    

Local fix

  • Turn off memtrace level for netinet.tcp
    

Problem summary

  • Due to unecessary tracing tcp performance is degraded.
    

Problem conclusion

  • Restrict tracing only in case of detailed tracing is enabled
    for debugging
    

Temporary fix

Comments

  • 6100-07 - use AIX APAR IV55000
    6100-08 - use AIX APAR IV52242
    6100-09 - use AIX APAR IV56023
    6100-09 - use AIX APAR IV56023
    6100-09 - use AIX APAR IV56023
    7100-01 - use AIX APAR IV57704
    7100-02 - use AIX APAR IV57259
    7100-03 - use AIX APAR IV55276
    7100-04 - use AIX APAR IV56088
    

APAR Information

  • APAR number

    IV57259

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-03-21

  • Closed date

    2014-03-21

  • Last modified date

    2016-05-10

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

    IV52242

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

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U862301

       UP14/08/12 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV57259

Modified date: 10 May 2016