Introduction to Performance * What is a performance problem * The “System centric” view of performance * Measuring performance * The first rule of interpreting metrics * Types of performance * Multiprocessor scaling * Bottlenecks * Baseline * Queuing and response times * Increasing CPU counts and utilization * Types of metrics HP Performance Tools * HP Performance tools * Sources of data * Glance * GPM – Glance Plus Motif * Adviser and Alarms * HP Performance Agent and Manager * HP Performance Manager * PRM * WLM * gWLM Unix Performance Tools * Caliper * Prospect * tusc * lsof * sar * top CPUs and Performance * Types of CPU bottlenecks * CPUs and performance * Data access times * Tuning for data latency * Performance and system size * mpsched * Launch policies * Processor sets * Address translation delays * Variable page size kernel parameters * The change attributes command * Hyperthreading * Shared caches * Compiler optimizations Processes and Performance * CPU performance problems * Understanding the “standard” scheduler * Load balancing * Managing priorities * psets * Priority Inversion * Interrupt processing * Looking at CPU Utilization CPUs Adjusting Performance * Unix commands to adjust prioritie * HP Tools and CPU Management * Process Resource Manager VxFS I/O Performance * Layers of I/O * I/O and performance * The filesystem layer * VxFS performance topics * VxFS inodes and extents * Defragmenting OnlineJFS filesystems * Understanding your I/O workload * Mount options * Caching controls * DSYNC * Concurrent I/O * vxtunefs * Performance implications of locks * Large directories * Buffered I/O, reading ahead * Writing behind * Direct I/O * Caching Volume Manager I/O Performance * Volume managers, introduction * Mirroring and performance * Striping * Multipathing * Load balancing policies * Looking at I/O performance in glance * Examining VxVM performance with vxstat * How PRM Manages Disk Bandwidth Disk I/O Performance * The SCSI layer * Optimizing I/Os in the SCSI Layer * Device caching * Setting low level SCSI parameters * Immediate reporting with simple disks * I/O related wait states * Process system calls Cell Local Memory and Performance * LORA * Uniform Memory access patterns * Non-Uniform memory access platform * Locality domains to manage ccNUMA memory * Configuring CLM * Impact of I/O locality * Applications suited to LORA * LORA with nPars * LORA with vPars * LORA with VM * SAP on LORA * Java on LORA * Oracle on LORA * Strategies for HP NUMA platforms Memory * System memory management * When does memory affect performance * Virtual memory * Memory allocation * vhand, the page daemon * Memory Resource Groups * File/Buffer cache paging differences * Diagnosing memory problems * Tuning the swap environment * How PRM manages memory * Memory File System Virtual Machine Performance * Monitoring VMs * hpvmsar * HP Integrity VM Manager * Glance * Measureware Java Performance * Measureware * Java out of the box * HPjmeter * Java Management console * Recipes for diagnosing problems * Mapping the physical network * Measuring network speed * ttcp or nttcp * netperf * LAN cards and CPU interrupts * Auto Port Aggregation * TCP segmentation offload * Monitoring network performance * glance * ping * traceroute * netstat * lsof * Wireshark Kernel Parameters * Kernel parameter groups * Process management * Memory management * I/O parameters * IPC parameters * Shared memory * Signal parameters * Networking * NFS parameters * Auditing and security * Glance report * Measureware collection * Tune-N-Tools