Introduction to zSeries Application Assist Processor (zAAP)

摘要

Starting with z/OS V1R6 on z890 and z990 servers, Java applications can run on a new type of processor called the eServer zSeries Application Assist Processor (zAAP). The zAAP is a relatively inexpensive solution for installations running a large amount of Java work. This paper presents an overview of zAAP processors, describes how zAAP processors interact with z/OS, discusses some performance considerations when implementing zAAP processors, and describes the data available in RMF that can be used to analyze zAAP performance. This paper also describes the zAAP enhancements that are available with IBM's new z9 109 server, and the changes implemented with z/OS V1R7.