IBM z13s, Technical Manual

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IBM z13s Technical Guide
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
1
has been changed to support the new z/OS
workload 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
.
LSPR Categories
Low
Low-
Average
Average-
High
High
Average
LSPR Mixes
LoIO-Mix TI-Mix TM-Mix
DI-Mix CB-Mix TD-Mix
Low
High
LSPR Primitives
CB-L WASDB OLTP-T OLTP-W
Relative NEST
Intensity
LSPR Categories
Low
Low-
Average
Average-
High
High
Average
LSPR Mixes
LoIO-Mix TI-Mix TM-Mix
DI-Mix CB-Mix TD-Mix
Low
High
LSPR Primitives
CB-L WASDB OLTP-T OLTP-W
Relative NEST
Intensity