PK78133: RMF REPORTS FROM V7.0 LOAD TESTS CONTAIN INCONSISTENT DATA.

Fixes are available

APAR status

Closed as program error.

Error description

User test scenario:
In order to get the information of average response time and CB
transaction rate, a Service Class for CB (WAS enclave) was set
up named as 'CBFAST'.
After generating some workload, there was something wrong in RMF
Workload Activity Report.
Here's the testcase scenario:

  - Service Class for WAS : CBFAST
  - LPAR configuration
       SAM1 LPAR : 6 GCPs and 6 zAAPs
       SAM2 LPAR : 6 GCPs and 6 zAAPs
  - Bring up one WAS instance per LPAR (totally 2 instances in 2
LPARs)
       SLSRV1A server on SAM1
       SLSRV1B server on SAM2
  - In workload generator side,
       1 virtual user per WAS server
       Set up totally 2 virtual users
  - Generate workload of 10 minitues

Concluded that the RMF workload report and the following is seen
in workload activity report of 'SERVICE CLASS=CBFAST'

   -TRANSACTIONS-  TRANS-TIME HHH.MM.SS.TTT
   AVG       1.73  ACTUAL               622
   MPL       1.73  EXECUTION             11
   ENDED    93939  QUEUED               611
   END/S   156.57  R/S AFFIN              0
   #SWAPS       0  INELIGIBLE             0
   EXCTD        0  CONVERSION             0
   AVG ENC   1.73  STD DEV              351
   REM ENC   0.00
   MS ENC    0.00

From the workload generator side (WAS client), the performance
output below was seen:

[08/12/28 10:34:50] Total Tps=154
                    [jg44:avg=14ms,tps=14]
                    [jg45:avg=6ms,tps=56]
                    [jn01:avg=16ms,tps=84]

As you can see above both reports,
   the TPS (Transaction per second) seems to be correct.
       END/S (RMF) 156.57 (from both LPAR)
       Total Tps (Workload Generator) 154

But, there is some mismatch in the response time:
In workload generator side, the average response time is
       (14ms * 14) + (6ms * 56) + (16ms * 84) / (14+56+84)
     = (196 + 336 + 1344) / 154 = 12.19ms

But, RMF report of TRANS-TIME said ACTUAL is 622ms
                               and EXECUTION is 11 ms
                               and QUEUED is 611 ms

Local fix

Contact WebSphere L2 to request if DLLs are available.

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server V7.0 for z/OS                        *
****************************************************************
* PROBLEM DESCRIPTION: RMF Records generated incorrectly       *
*                      show response time for incoming         *
*                      requests.                               *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
When WLM statistics are generated the time stamp saved is not
correct.  The way this value was calculated ended up not being
saved in the state map and propagated down to the native code
level.

Problem conclusion

The value saved in the state map is updated and passed into
the WLM statistics correctly.

APAR PK78133 is currently targeted for inclusion in
Service Level 7.0.0.4 (Fix Pack) of WebSphere
Application Server  for z/OS.

Please refer to URL:
//www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
for Fix Pack availability.

Temporary fix

Comments

APAR Information

APAR number
PK78133
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-01-06
Closed date
2009-04-10
Last modified date
2011-04-08

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

PM25923

Fix information

Fixed component name
WEBSPHERE FOR Z
Fixed component ID
5655I3500

Applicable component levels

R700 PSY UK46314
UP09/05/16 P F905

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
25 October 2021

Tips

PK78133: RMF REPORTS FROM V7.0 LOAD TESTS CONTAIN INCONSISTENT DATA.

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

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

Fixed component ID

Applicable component levels

R700 PSY UK46314

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

Document Information

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