Resources

Guide
Guide

Commercial Clusters and Scalability

In this paper we present an introductory analysis of throughput scalability for update intensive workloads (such as measured by the TPC-C or TPC-W benchmarks) and how that scaling is limited by serialization effects in the software-hardware combination that comprises any platform.
Infrastructure Management
Guide
Guide

UNIX Load Average Part 1: How It Works

In this online article Dr. Gunther digs down into the UNIX kernel to find out how load averages (the “LA Triplets”) are calculated and how appropriate they are as capacity planning metrics.
Guide
Guide

UNIX Load Average: Reweighed

This is an unexpected Part 3 to the discussion about the UNIX load average metric answering the question of where the weight factor comes from.
Guide
Guide

The “LA Triplets” Quiz

This is a little quiz to test your understanding of the triplet of numbers that appear in the UNIX® load average (LA) performance metric.
Article
Article

IT Service Optimization: Reaching New Heights

By Per Bauer on Sat, 11/15/2008
Survey Says Chaos Reigns A global survey of more than 300 IT executives, directors and managers revealed that the majority of IT organizations (53%) rank in the chaotic level of IT Service Optimization maturity. That means these organizations lack a consistent process to manage and improve the quality and efficiency of their services and will continue firefighting performance and capacity issues...
Infrastructure Management
Article
Article

Modeling Multi-Threaded Processors

Tue, 01/29/2008
There are substantial differences between single-threaded and multi-threaded architectures. The new capabilities combined with the easy-to-use Vityl Capacity Management interface makes it easy to predict application and service performance on the new multi-threaded architectures.