Chapter 4    Jade System Instrumentation and Diagnosis

This chapter covers the following topics.

• Overview

• Implementing System Instrumentation and Diagnosis Methods

  • Adjusting the Retention Priority of Objects in Cache

  • Getting Cache Information

  • Method Profiling

  • Getting Database File Statistics

  • Getting Database Statistics

  • Getting Locks

  • Getting Method Cache Statistics

  • Getting Notification Statistics

  • Getting Object Access Information

  • Getting Process Information

  • Getting RPC Statistics

  • Getting Web Statistics

  • Mutex Contention Count

  • Recording Lock Contention Information

  • Invoking an Operating System Process Dump

  • Instrumentation and Diagnosis Settings

• Node Sampling

  • Capturing Sampling Data

  • Node Class External Methods

  • System Class External Methods

  • Sampling Library Interface

  • Statistics File Format

  • File Header

  • Begin Process

  • End Process

  • Begin Interval

  • End Interval

  • Local Request Statistics Format

  • Remote Requests Statistics Format

  • Individual Local Requests

  • Individual Remote Requests

  • Statistics File Request Values

  • Cache Statistics

  • Cache Buffer Activity

  • User Command

  • File Trailer

  • Considerations and Restrictions

  • Example of Code to Manually Sample Node Statistics

  • Direct Retrieval of Node Sampling Statistics

  • Using the Jade Sampling Application