5.5 RTW workload  5.5.1 Performance measurements for non-data sharing RTW workload The Relational Transaction Workload (RTW) is a standard workload that is used by the CICS  performance team in Hursley to assess changes in performance characteristics for new CICS  releases for applications accessing Db2. The Db2 team employed the RTW workload as one  of its performance test benchmark workloads to achieve better performance analysis  coverage for CICS-Db2 type of workloads. The workload was modified slightly compared to  the version the CICS team uses to better reflect the Db2 behavior of the workload. The RTW workload includes the following characteristics: The following environment configuration is used for the non-data sharing RTW workload: The following environment was used by the two-way data sharing RTW workload: Five performance measurements that use the RTW workload were conducted during different  migration stages, from Db2 11 NFM to Db2 12 at function level V12R1M500. A typical  customer might run their Db2 system in any of the following migration phases:  GLYPH<SM590000> All programs that make up the workload are written in COBOL. GLYPH<SM590000> The workload uses 20 (data) tables in segmented table spaces, 11 non-unique indexes,  and 16 unique indexes. GLYPH<SM590000> It issues on average 200 Db2 calls per transaction. GLYPH<SM590000> The transaction mix includes 26% select, 3% insert, 7% update, 3% delete, 6% open  cursor, 36% fetch cursor, 6% close cursor operations. GLYPH<SM590000> One z13 LPAR with eight general CPs  GLYPH<SM590000> Four CICS regions that are running CICS TS V5.1 GLYPH<SM590000> A non-data sharing Db2 subsystem GLYPH<SM590000> z/OS 2.1 GLYPH<SM590000> DS8870 DASD controller GLYPH<SM590000> TPNS on another z13 LPAR with four general CPs to drive the workload GLYPH<SM590000> Two z13 LPARs with eight general CPs each GLYPH<SM590000> Eight CICS regions running CICS TS 5.1 with four regions that are running on each of the  LPARs GLYPH<SM590000> Two z13 ICF LPARs running CFLEVEL 21 CFCC GLYPH<SM590000> Two Db2 subsystems, each running on one of the two LPARs GLYPH<SM590000> DS8870 DASD controller GLYPH<SM590000> TPNS on another z13 LPAR with four general CPs to drive the workload GLYPH<SM590000> Baseline measurement with Db2 11 NFM GLYPH<SM590000> Db2 12 at function level V12R1M100 measurement without rebinding application  packages GLYPH<SM590000> Db2 12 at function level V12R1M100 measurement after rebinding application packages  with APREUSE(ERROR) GLYPH<SM590000> Db2 12 at function level V12R1M500 measurement with application packages previously  rebound at V12R1M100 with APREUSE(ERROR)  GLYPH<SM590000> Db2 12 at function level V12R1M500 measurement after rebinding application packages  with APREUSE(NONE) Chapter 5. Workload level measurements  173