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Using truss, pstack, and DTrace to Debug High CPU Type Problems on Solaris (Doc ID 1615836.1)

Last updated on OCTOBER 31, 2019

Applies to:

Oracle Communications Messaging Server - Version 5.2.0 and later
Information in this document applies to any platform.

Purpose

If you have a problem where a process seems to be doing nothing and is not using any/much CPU time, see Doc ID 1386530.1.

This article describes ways to begin to diagnose why a process is using more CPU than normal.

 

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 Why is this abnormal?
 About collecting the following outputs
 Does it stay this way?
 Or is it intermittent, periodic, otherwise hard to catch? hot-smtp script
 Messages with many recipient headers
 Overview of syscalls
References

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