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z/VM Performance Report

Table of Contents

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Notices
  Programming Information
  Trademarks
  Acknowledgements

Introduction
 Update Log
 Referenced Publications

New! z/VM Version 6 Release 4
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Considerations
  Performance Management
 New Functions
  Memory Management Serialization Contention Relief
  z/VM Paging Improvements
  CP Scheduler Improvements
  RSCS TCPNJE Encryption
  TLS/SSL Server Changes
  Concurrent I/O Support for XIV
  Dump Channel Program Changes

z/VM for z13
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Considerations
  Performance Management
 New Functions
  Simultaneous Multithreading
  System Scaling Improvements

z/VM Version 6 Release 3
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Considerations
  Performance Management
 New Functions
  Storage Management Scaling Improvements
  z/VM HiperDispatch
  Dump Enhancements
  CPU Pooling

z/VM Version 6 Release 2
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Considerations
  Performance Management
 New Functions
  Live Guest Relocation
  Workload and Resource Distribution
  ISFC Improvements
  Storage Management Improvements
  High Performance FICON

z/VM Version 5 Release 4
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Considerations
  Performance Management
 New Functions
  Dynamic Memory Upgrade
  Specialty Engine Enhancements
  DCSS Above 2 GB
  TCP/IP Ethernet Mode Support
  Telnet IPv6 Support
  CMS-Based SSL Server

z/VM Version 5 Release 3
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Considerations
  Performance Management
 New Functions
  Improved Real Storage Scalability
  Memory Management: VMRM-CMM and CMMA
  Improved Processor Scalability
  Diagnose X'9C' Support
  Specialty Engine Support
  SCSI Performance Improvements
  z/VM HyperPAV Support
  Virtual Switch Link Aggregation

z/VM Version 5 Release 2
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Considerations
  Performance Management
 Migration from z/VM 5.1.0
  CP Regression Measurements
  CP Disk I/O Performance
 New Functions
  Enhanced Large Real Storage Exploitation
  Extended Diagnose X'44' Fast Path
  QDIO Enhanced Buffer State Management
  z/VM PAV Exploitation
 Additional Evaluations
  Linux Disk I/O Alternatives
  Dedicated OSA vs Virtual Switch Comparison
  Layer 3 and Layer 2 Comparisons
  Guest Cryptographic Enhancements

z/VM Version 5 Release 1
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Considerations
  Performance Management
 New Functions
  24-Way Support
  Emulated FBA on SCSI
  Internet Protocol Version 6 Support
  Virtual Switch Layer 2 Support
 Additional Evaluations
  z990 Guest Crypto Enhancements

z/VM Version 4 Release 4
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Management
 New Functions
  Scheduler Lock Improvement
  z/VM Virtual Switch
  Queued I/O Assist
  TCP/IP Stack Performance Improvements
  TCP/IP Device Layer MP Support
 Additional Evaluations
  Linux Guest Crypto on z990

z/VM Version 4 Release 3
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Considerations
  Performance Management
 New Functions
  Enhanced Timer Management
  VM Guest LAN: QDIO Simulation
  Linux Guest Crypto Support
  Improved Utilization of Large Real Storage
  Accounting for Virtualized Network Devices
  Large Volume CMS Minidisks
  TCP/IP Stack Performance Improvements

z/VM Version 4 Release 2
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Management
 New Functions
  HiperSockets and VM Guest Lan Support
  64-bit Fast CCW Translation
  64-bit Asynchronous Page Fault Service (PFAULT)
  Guest Support for FICON CTCA
  DDR LZCOMPACT Option
  IMAP Server
 Additional Evaluations
  Linux Connectivity Performance
  Linux Guest DASD Performance

z/VM Version 4 Release 1
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Management
 New Functions
  Fast CCW Translation for Network I/O

z/VM Version 3 Release 1
 Summary of Key Findings
 Changes That Affect Performance
  Performance Improvements
  Performance Considerations
  Performance Management
 Migration from VM/ESA 2.4.0 and TCP/IP FL 320
  CMS-Intensive
   2064 2-Way LPAR, 1G/2G
   2064-1C8, 2G/6G
   2064-1C8, 2G/10G
  VSE/ESA Guest
  TCP/IP
   Telnet
   FTP
 Migration from Other VM Releases
 New Functions
  CP 64-Bit Support
   Real Storage Sizes above 2 GB
   Minidisk Cache with Large Real Storage
   The 2G Line
  Queued Direct I/O Support
  Secure Socket Layer Support
 Additional Evaluations
  Linux Guest IUCV Driver
  Virtual Channel-to-Channel Performance
  Migration from VTAM to Telnet
  Comparison of CMS1 to FS8F

Workloads
 AWM
 Apache
 IOzone
 Linux OpenSSL Exerciser
 z/OS SSL Performance Workload
 z/OS DB2 Utility Workload
 z/OS Java Encryption Performance Workload
 z/OS ICSF Performance Workload
 CMS-Intensive (FS8F)
 CMS-Intensive (CMS1)
 VSE Guest (DYNAPACE)
 z/OS File System Performance Tool
 z/OS IP Security Performance Workload
 Virtual Storage Exerciser
 Ping
 PFAULT
 BLAST
 ISFC Workload
 IO3390 Workload
 z/VM HiperDispatch Workloads
 Daytrader Workload
 Master Processor Workload

Glossary of Performance Terms

Footnotes