Draft Document for Review April 7, 2004 6:15 pm

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workload types are now required to better evaluate processor capacity as the production environments are changing, including new, e-business applications.

Those factors contributed to the following LSPR changes for the z990 processors:

￿Newer version of operating systems (z/OS V1 R4 and z/VM V4 R3)

￿Some workloads dropped; others changed or added

￿New VM workloads run as Linux virtual machines

￿New Linux native workloads

￿All ITRs now assume LPAR mode

￿Most workload ITRs now assume 64-bit addressing

￿VSE/ESA workloads have been dropped

The LSPR workloads for z990 are listed in Table 8-3. The measured ITRs represent LPAR Mode.

Table 8-3 LSPR workloads for z990 (LPAR Mode)

Operating system

Workload type

Workload description

 

 

 

z/OS

CB-L

CPU-intensive commercial batch (formerly CBW2)

 

 

 

 

CB-S

I/O-intensive commercial batch (formerly CB84)

 

 

 

 

WASDB

WebSphere Application Server+DB2 (Trade2-EJB)

 

 

 

 

OLTP-W

Web-enabled OLTP. CICS/DB2 with WebSphere

 

 

Application Server front end.

 

 

 

 

OLTP-T

Traditional OLTP (IMS)

 

 

 

z/VM

CMS1

Interactive CMS users

 

 

 

 

WASDB/LVm

Linux guests with WebSphere app+DB (Trade2-EJB)

 

 

 

Linux

WASDB/L

WebSphere app+DB (Trade2-EJB)

 

 

 

 

EAS-AS/L

Enterprise Application Solution Application Serving under

 

 

Linux

 

 

 

Following are descriptions of the new workloads:

￿CB-L (Commercial Batch Long job steps - CPU-Intensive; formerly CBW2):

The CB-L workload is a commercial batch jobstream reflective of fairly heavy CPU processing. The jobs are more resource-intensive than jobs in the CB-S workload, use more current software, and exploit ESA features. The work done by these jobs includes various combinations of C, COBOL, FORTRAN, and PL/I compile, link-edit, and execute steps. Sorting, DFSMS, VSAM and DB2 utilities, SQL processing, SLR processing, GDDM® graphics, and FORTRAN engineering/scientific subroutine library processing are also included. This workload is heavily DB2-oriented, with about half of the processing time performing DB2-related functions.

￿CB-S (Commercial Batch Short job steps - I/O-Intensive; formerly CB84):

The CB-S workload is a moderate commercial batch jobstream reflective of fairly I/O processing. The work done by these jobs includes various combinations of compile, link-edit, and execute steps. Utility jobs, primarily for data manipulation, are also included.

￿WASDB (WebSphere Application Serving and Data Base):

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IBM manual Lspr workloads for z990 Lpar Mode
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990 specifications

The IBM 990 series, often referred to in the context of IBM's pioneering efforts in the realm of mainframe computing, represents a unique chapter in the history of information technology. Introduced in the late 1960s, the IBM 990 series was designed as a powerful tool for enterprise-level data processing and scientific calculations, showcasing the company's commitment to advancing computing capabilities.

One of the main features of the IBM 990 was its architecture, which was built to support a wide range of applications, from business processing to complex scientific computations. The system employed a 32-bit word length, which was advanced for its time, allowing for more flexible and efficient data handling. CPUs in the IBM 990 series supported multiple instructions per cycle, which contributed significantly to the overall efficiency and processing power of the machines.

The technology behind the IBM 990 was also notable for its use of solid-state technology. This provided a shift away from vacuum tube systems that were prevalent in earlier computing systems, enhancing the reliability and longevity of the hardware. The IBM 990 series utilized core memory, which was faster and more reliable than the magnetic drum memory systems that had been standard up to that point.

Another defining characteristic of the IBM 990 was its extensibility. Organizations could configure the machine to suit their specific needs by adding memory, storage, and peripheral devices as required. This modular approach facilitated the growth of systems alongside the technological and operational demands of the business environments they served.

In terms of software, the IBM 990 series was compatible with a variety of operating systems and programming environments, including FORTRAN and COBOL, enabling users to access a broader array of applications. This versatility was a significant advantage, making the IBM 990 an appealing choice for educational institutions, research facilities, and enterprises alike.

Moreover, the IBM 990 was engineered to support multiprocessing, which allowed multiple processes to run simultaneously, further increasing its effectiveness in tackling complex computing tasks.

In summary, the IBM 990 series represents a significant advancement in computing technology during the late 20th century. With a robust architecture, versatile configuration options, and a focus on solid-state technology, the IBM 990 facilitated substantial improvements in data processing capabilities, making it a cornerstone for many businesses and academic institutions of its time. Its impact can still be seen today in the continued evolution of mainframe computing.
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