IBM System z10 EC Reference Manual

Also see for System z10 EC: Reference guide

Contents

14The performance design of the z/Architecture can enablethe server to support a new standard of performance forapplications through expanding upon a balanced systemapproach. As CMOS technology has been enhanced tosupport not only additional processing power, but alsomore PUs, the entire server is modified to support theincrease in processing power. The I/O subsystem supportsa greater amount of bandwidth than previous generationsthrough internal changes, providing for larger and fastervolume of data movement into and out of the server. Sup-port of larger amounts of data within the server requiredimproved management of storage configurations, madeavailable through integration of the operating system andhardware support of 64-bit addressing. The combined bal-anced system design allows for increases in performanceacross a broad spectrum of work.Large System Performance ReferenceIBM’s Large Systems Performance Reference (LSPR)method is designed to provide comprehensivez/Architecture processor capacity ratios for different con-figurations of Central Processors (CPs) across a widevariety of system control programs and workload environ-ments. For z10 EC, z/Architecture processor capacityindicator is defined with a (7XX) notation, where XX is thenumber of installed CPs.Based on using an LSPR mixed workload, the perfor-mance of the z10 EC (2097) 701 is expected to be up to1.62 times that of the z9 EC (2094) 701.The LSPR contains the Internal Throughput Rate Ratios(ITRRs) for the new z10 EC and the previous-generationzSeries processor families based upon measurementsand projections using standard IBM benchmarks in a con-trolled environment. The actual throughput that any usermay experience will vary depending upon considerationssuch as the amount of multiprogramming in the user’s jobstream, the I/O configuration, and the workload processed.LSPR workloads have been updated to reflect moreclosely your current and growth workloads. The classifica-tion Java Batch (CB-J) has been replaced with a new clas-sification for Java Batch called ODE-B. The remainder ofthe LSPR workloads are the same as those used for the z9EC LSPR. The typical LPAR configuration table is used toestablish single-number-metrics such as MIPS and MSUs.The z10 EC LSPR will rate all z/Architecture processorsrunning in LPAR mode, 64-bit mode, and assumes thatHiperDispatch is enabled.For more detailed performance information, consult theLarge Systems Performance Reference (LSPR) availableat: http://www.ibm.com/servers/eserver/zseries/lspr/.z10 EC Performance