DatapackJava

/jfr

Start or stop a Java Flight Recorder profiling session.

Syntax

Parameters

action
literal
start or stop.

Examples

  • Begin a JFR recording for deep performance analysis.

Permission level

/jfr requires Server owner (op level 4). In single-player you need the world's "Allow Cheats" toggle on. On a multiplayer server you need to be opped — see /op.