7.1 Introduction7.2 Release-to-release comparisons7.2.1 Data Systems Workload dynamic routing7.2.2 RTW threadsafe7.3 Improvements in threadsafety7.3.1 Threadsafe API and SPI commands7.3.2 Optimizations for SSL support7.3.3 Offloading authentication requests to open TCBs7.4 Changes to system initialization parameters7.4.1 Storage protection (STGPROT)7.4.2 Internal trace table size (TRTABSZ)7.5 Enhanced instrumentation7.5.1 The DFHCICS performance group7.5.2 The DFHTASK performance group7.5.3 The DFHTEMP performance group7.5.4 The DFHWEBB performance group7.5.5 Monitoring domain global statistics7.5.6 TCP/IP global statistics7.5.7 URIMAP global statistics7.6 Low-level CICS optimizations7.6.1 Monitoring and trace enabled7.6.2 Monitoring disabled, trace enabled7.6.3 Monitoring enabled, trace disabled7.6.4 Monitoring and trace disabled7.6.5 Monitoring and trace disabled with low numbers of MRO sessions7.6.6 Low-level CICS optimizations conclusions7.7 Web support and web service optimization7.8 Java workloads7.8.1 Java workload configuration7.8.2 Java servlet workload7.8.3 Java OSGi workload7.9 Java 8 performance7.9.1 Improvements in Java 7.0, Java 7.1, and Java 87.9.2 Java performance benchmarks in CICS7.9.3 Java 8 and OSGi applications7.9.4 Java 8 and WebSphere Liberty servlet applications7.9.5 Java 8 and z/OS Connect applications7.10 Simultaneous multithreading with Java workloads7.10.1 Introduction to SMT7.10.2 Measuring SMT performance7.10.3 CICS throughput improvement7.11 Reporting of CPU time to z/OS Workload Manager7.12 z/OS Connect for CICS7.12.1 CICS TS V5.3 performance enhancement7.12.2 Varying payload sizes by using Java parser7.12.3 Comparing Java and native parsers7.12.4 Comparing Java and native parsers with varying request sizes7.12.5 Comparing Java and native parsers with varying response sizes7.12.6 Native parser conclusion7.13 HTTP flow control7.13.1 Server accept efficiency fraction7.13.2 Flow control configuration7.13.3 Flow control operation7.13.4 CICS statistics enhancements7.13.5 Comparison of SOTUNING options7.14 High transaction rate performance study7.15 WebSphere Liberty zIIP eligibility7.16 Link to WebSphere Liberty7.16.1 Performance comparison7.16.2 Link to WebSphere Liberty performance results7.16.3 Link to WebSphere Liberty performance conclusion7.16.4 Comparison of CICS monitoring and RMF data