JFR(1) JDK JFR(1) (NAME) jfr - (Flight Recorder) (SYNOPSIS) : jfr print [] file : jfr view [] file .jfc: jfr configure [] : jfr metadata [file] : jfr summary file : jfr scrub [] file : jfr assemble repository file : jfr disassemble [] file : . . file (.jfr) . repository (chunk files) . (DESCRIPTION) jfr (.jfr) . . (scrubbing) . () . . jfr : o print o view o configure o metadata o summary o scrub o assemble o disassemble jfr print jfr print . : jfr print [--xml|--json|--exact] [--categories ] [--events ] [--stack-depth ] : --xml XML. --json JSON. --exact . --categories . ( / ) / (glob) . --events . ( / ) / . --stack-depth (stack trace) 5. (.jfr). xml json . . jfr --help print . . ( @Name) ( @Category) . . . . GC CPULoad : jfr print --categories GC --events CPULoad recording.jfr . jdk.jfr.Percentage 0.52 %52 . 5 --stack-depth . jfr view jfr view . : jfr view [--verbose] [--width ] [--truncate ] [--cell-height ] : --verbose (query) . --width . . --truncate . 'beginning' 'end' . 'end' . --cell-height . . . jfr --help view . (.jfr). . jfr view types . jfr view all-views . jfr view all-events . jfr configure jfr configure .jfc . : jfr configure [--interactive] [--verbose] [--input ] [--output ] [option=value]* [event-setting=value]* --interactive . --verbose . --input .jfc . JDK (default.jfc). 'none' . --output . custom.jfc . option=value . jfr help configure . event-setting=value . : #= '+' . 20ms. Javadoc jdk.jfr . jfr metadata jfr metadata . : jfr metadata [--categories ] [--events ] [] --categories . ( / ) / . --events . ( / ) / . (.jfr). JDK 'jfr' . jfr summary jfr summary . . . : jfr summary : (.jfr). jfr scrub jfr scrub . : jfr scrub [--include-events ] [--exclude-events ] [--include-categories ] [--exclude-categories ] [--include-threads ] [--exclude-threads ] [] --include-events . --exclude-events . --include-categories . --exclude-categories . --include-threads (thread). --exclude-threads . . . "-scrubbed" . ( / ) / . . jfr assemble jfr assemble (chunk files) . : jfr assemble : . (.jfr). (chunks) . . . JVM (crash) jfr assemble . (.part) . jfr disassemble jfr disassemble . : jfr disassemble [--max-chunks ] [--output ] : --output . --max-chunks 5. 15 . --max-size . (.jfr). . . myfile_1.jfr myfile_2.jfr . . 100 myfile_001.jfr . version help jfr jfr --version jfr version jfr . jfr : jfr <--help|help> [subcommand] : [subcommand] : o print o view o configure o metadata o summary o scrub o assemble o disassemble JDK 26.0.2.1 2026 JFR(1)