Troubleshooting
Problem
What type of performance data do I collect and how do I send it to the IBM i Global Support Center?
Resolving The Problem
This document includes a collection of Performance MustGather documents. If you are unsure where to start, follow the links under the Reporting a Performance Problem Using QMGTOOLS MustGather Tool section.
Severity 1 Performance Problem? How to report a high severity issue
Reporting a Performance Problem Using QMGTOOLS MustGather Tool (preferred method):
Collecting Performance Data Without Using QMGTOOLS MustGather Tool:
SQL Data Collection Documents:
| Collecting SQL Performance Monitor (DBMON) Data |
| Collecting a Targeted Trace (advanced query trace for poor performing query) |
| Gathering a Plan Cache Snapshot |
Job Watcher MustGather:
Performance Explore (PEX) MustGather:
| High CPU - PEX TPROF |
| Disk Response Time and Requests - PEX PDIO |
Problems with Collection Services and Graph History:
| Auditing Collection Services |
| Determining Who/What is Deleting Collection Services Performance Data Members |
| Collection Services Collector Trace Instructions |
Historical data (Graph History) display issues |
Cache Line MustGather:
| IBM i Power10 and Power11 Cache Line Traces |
| IBM i Power9 Cache Line Traces |
| IBM i Power8 Cache Line Traces |
| IBM i Power7 Cache Line Traces |
External Storage MustGather:
VIOS MustGather:
| VIOS Advisor for VIOS 2.2.2.0 or Higher |
| VIOS Advisor |
Related Information
[{"Type":"MASTER","Line of Business":{"code":"LOB68","label":"Power HW"},"Business Unit":{"code":"BU070","label":"IBM Infrastructure"},"Product":{"code":"SWG60","label":"IBM i"},"ARM Category":[{"code":"a8m0z0000000CI9AAM","label":"Performance-\u003EMustGather"}],"ARM Case Number":"","Platform":[{"code":"PF012","label":"IBM i"}],"Version":"All Versions"}]
Historical Number
567769619
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Document Information
Modified date:
26 August 2025
UID
nas8N1012115