PQ88991: WEBSPHERE SMF 120 INTERVAL RECORDS ARE INACCURATE, SOMETIMES

 A fix is available

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APAR status
Closed as program error.

Error description
The SMF 120 subtype 6 J2EE container interval records are
reporting
incorrrect average response time values - usually higer than the
client observes.  The Activity records (SMF 120 subtype 5
records) appear to have accurate response time values.
The response times are sometimes 20-50% higher than the values
from the individual records, sometimes the are very similar.
Local fix Problem summary
****************************************************************
* USERS AFFECTED: All users of WebSphere Application Server    *
*                 V5.0 for z/OS                                *
****************************************************************
* PROBLEM DESCRIPTION: The SMF 120 subtype 6 J2EE container    *
*                      interval records are reporting          *
*                      incorrect average response time values. *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Code calculates the average after adding in each new time. The
remainder is not added or subtracted so the average response
time, SM120JM3, of large samples is not accurate.
The SM120WIY field in the Servlet section of the SMF 120
Subtype 8 WebContainer interval record has the same problem.
Problem conclusion
Update the code to keep the total time and compute the average
when writing the record.

APAR PQ88991 is associated with SERVICE LEVEL W502011 of
WebSphere Application Server V5.0 for z/OS.
Temporary fix Comments
APAR information
APAR number PQ88991
Reported component name WEBSPHERE FOR Z
Reported component ID 5655I3500
Reported release 500
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2004-05-18
Closed date 2004-06-16
Last modified date 2004-07-02

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:
PQ89479

Modules/Macros
BBOUBINF          

Publications Referenced

Fix information
Fixed component name WEBSPHERE FOR Z
Fixed component ID 5655I3500

Applicable component levels
R500 PSY UQ89659    UP04/06/22 P F406

  Fix is available
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Document Information


Current web document: swg1PQ88991.html
Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server for z/OS
Operating system(s):
Software version: 500
Software edition:
Reference #: PQ88991
IBM Group: Software Group
Modified date: Jul 2, 2004