The IBM i performance data collectors (PEX, Job Watcher, Disk Watcher and Collection Services) typically require certain PTFs before collecting data and in some cases analyzing data too.

Information about the PTFs needed for each release of IBM i are provided on these pages by selecting the desired IBM i version and release above.

Note: You can still install iDoctor without loading these PTFs, however before collecting data you should check if the required PTFs have been installed.

PT1 is not a required prerequisite to use iDoctor, but be aware of this security vulnerability if that LPP is installed on your system:
Security Bulletin: IBM Performance Tools for i is vulnerable to local privilege escalation (CVE-2023-30989)