A fix is available
APAR status
Closed as program error.
Error description
After changing z/OS implementation to use the hiperdispatch option, incorrect data is seen in table MVSPM_CPU_H columns MEASURED_SEC, CPU_BUSY_SEC, CPU_DISPATCH_SEC, CPU_BUSY_MIPS, MVS_BUSY_SEC. The problem appears to be due to split SMF type70 records caused by using hyperdispatch. Because a SMF record 70 is limited to 32K the number of "PR/SM Logical Processor Data Sections" in one record is limited to 318 sections. When there are more than 318 PR?SM logical processor data sections, a second SMF record 70 is created and this split record is not handled correctly.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All Tivoli Decision Support customers who * * have split SMF type 70 records, and use * * any of the following components: * * * * z/OS System (MVS) * * z/OS Performance Management (MVSPM) * * Tivoli Performance Modeler for z/OS * **************************************************************** * PROBLEM DESCRIPTION: SMF type 70 records can be split over * * multiple SMF records, where too many * * partitions and logical processors exist * * to fit into a single SMF record. * * * * These split records are not processed * * correctly by TDS, resulting in * * incorrect data being collected. * **************************************************************** * RECOMMENDATION: APPLY THE PTF FIXING THIS APAR * **************************************************************** Split SMF type 70 records are not processed correctly by TDS. TDS handles each (split) SMF type 70 record as a complete record. This causes the following problems: 1. TDS calculates certain values (for example the total weight of shared processors) across all partitions. Where these partitions are split over multiple SMF records, TDS calculates this incorrectly. 2. TDS uses the information in the Physical partition for calculations for all the other partitions. When the SMF type 70 record is split over multiple records, the Physical partition only exists in the last one. This causes TDS to calculate and collect data incorrectly.
Problem conclusion
Record procedure DRL2S070 now reassembles the split SMF type 70 records first, into one complete record (containing all partitions and logical processors), before TDS processes the records. 7A0Y 70AY 701Y 710Y 8A0Y 801Y DRLPMG01 DRLTMPAS DRLTMVSY DRL2S070
Temporary fix
Comments
APAR Information
APAR number
PM00099
Reported component name
TDS FOR Z/OS
Reported component ID
569510100
Reported release
801
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2009-10-30
Closed date
2010-01-06
Last modified date
2010-02-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK53425 UK53426 UK53427 UK53428 UK53429 UK53430
Modules/Macros
DRLPMG01 DRLTMPAS DRLTMVSY DRL2S070
SH19690210 | SH19690211 | SH19690212 |
Fix information
Fixed component name
TDS FOR Z/OS
Fixed component ID
569510100
Applicable component levels
R7A0 PSY UK53428
UP10/01/09 P F001
R70A PSY UK53429
UP10/01/09 P F001
R701 PSY UK53425
UP10/01/09 P F001
R710 PSY UK53426
UP10/01/09 P F001
R8A0 PSY UK53430
UP10/01/09 P F001
R801 PSY UK53427
UP10/01/09 P F001
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.
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Document Information
Modified date:
01 February 2010