New Z/Os Workload Categories Defined; Relating Production Workloads To Lspr Workloads - IBM z13s Technical Manual

12.6 Relating production workloads to LSPR workloads

Historically, a number of techniques were used to match production workloads to LSPR
workloads:
Application name (a client running CICS can use the CICS LSPR workload)
Application type (create a mix of the LSPR online and batch workloads)
I/O rate (the low I/O rates used a mix of low I/O rate LSPR workloads)
The previous LSPR workload suite was composed of the following workloads:
OLTP-T (formerly known as IMS)
Web-enabled online transaction processing workload (OLTP-W, also known as
Web/CICS/DB2)
A heavy Java based online stock trading application (WASDB, previously referred to as
Trade2-EJB)
Batch processing, represented by the CB-L (also called CBW2)
A new ODE-B Java batch workload, replacing the CB-J workload
The traditional Commercial Batch Short Job Steps (CB-S) workload (formerly CB84) was
dropped. Figure 12-4 on page 442 shows the traditional factors that have been used to
categorize workloads.
The previous LSPR provided performance ratios for individual workloads and for the default
mixed workload. This default workload was composed of equal amounts of four of the
previous workloads (OLTP-T, OLTP-W, WASDB, and CB-L). Guidance in converting the
previous LSPR categories to the new ones is given in Figure 12-5. The IBM Processor
Capacity Reference for z Systems (zPCR) tool
workload categories.
LSPR Primitives LSPR Primitives
LSPR Mixes LSPR Mixes
LSPR Categories LSPR Categories
Figure 12-5 New z/OS workload categories defined
However, as addressed in 12.5, "LSPR workload categories based on relative nest intensity"
on page 443, the underlying performance sensitive factor is how a workload interacts with the
1
The IBM zPCR tool reflects the latest IBM LSPR measurements. It is available at no extra charge at
http://www.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/PRS1381
444
IBM z13s Technical Guide
Relative NEST Relative NEST
Low Low
CB-L CB-L WASDB WASDB
Low- Low-
Low Low
Average Average
1
has been changed to support the new z/OS
Intensity Intensity
OLTP-T OLTP-W OLTP-T OLTP-W
LoIO-Mix LoIO-Mix TM-Mix TM-Mix
CB-Mix CB-Mix TD-Mix TD-Mix
Average- Average-
Average Average
High High
.
High High
TI-Mix TI-Mix
DI-Mix DI-Mix
High High