Overview
This document provides a comprehensive guide to measuring the enhanced performance capabilities of the IBM z16 system. It details the use of the CPU Measurement Facility (CPU MF) to gather critical hardware instrumentation data for production systems.
Key Features and Metrics
- CPU Measurement Facility (CPU MF): Explains the components, including counters and sampling, and its introduction in z10 and later processors.
- SMF Data: Covers new z/OS SMF 30 records for Crypto and AIU (AI Accelerator) usage, as well as SMF 113 records for CPU MF data.
- Performance Metrics: Details various metrics such as CPI, L1MP, L2P, L3P, L4LP, L4RP, MEMP, RNI, and LPARCPU, along with their calculation formulas.
- Hardware and Topology: Compares z16 hardware and topology with previous generations like z15.
- AIU and Crypto Acceleration: Focuses on tracking cryptographic operations and AI Accelerator (NNPA) usage, providing insights for compliance, performance, and configuration.
- Workload Analysis: Discusses LSPR workload matching and the importance of capturing CPU MF data as an industry best practice.
Resources and Further Information
The document references several IBM resources for detailed information:
- z/OS implementation instructions for SMF 113 records
- z/VM implementation instructions for CPU MF
- Identifying SIIS Inefficiency using CPU MF Counters
- CPACF Usage Tracking documentation
- Best Practice for Number of Logical CPs Defined for an LPAR
For inquiries or enhancement requests, contact cpstools@us.ibm.com.
