Tru64 UNIX System Configuration and Tuning

This document, "Tru64 UNIX System Configuration and Tuning," published in September 2002, serves as a manual for system administrators. Its primary purpose is to provide guidance and recommendations for tuning the Tru64 UNIX operating system to achieve high performance and high availability.

The manual is structured into three main parts:

1. Introduction to System Tuning: Covers fundamental concepts like hardware configuration, performance terminology (bandwidth, throughput, latency), disk storage resources (RAID technology, SCSI, Fibre Channel), network resources (NetRAIN, LAG), file system resources (AdvFS, NFS), memory resources (paging, swapping, caching), and CPU resources. It emphasizes understanding the workload to identify appropriate tuning strategies.
2. Tuning by Application Type: Offers specific tuning recommendations for key applications such as Oracle databases, Network File Systems (NFS), and Web Servers. For each application, it details tunable attributes and relevant system monitoring tools.
3. Tuning By Component: Provides in-depth tuning information for various system components, including system resource allocation (process limits, program size limits, address space limits, interprocess communication limits, open file limits), disk storage performance (LSM, hardware RAID), network performance, file system performance (AdvFS, UFS, NFS caches), memory performance, and CPU performance.

The document highlights the importance of using monitoring tools like hwmgr, collect, sys_check, lockinfo, sched_stat, nfsstat, tcpdump, and netstat to diagnose performance problems. It also notes that kernel subsystem attributes can be modified at runtime or require a system reboot for changes to take effect. For graphical management, it recommends using the SysMan interface.