Commands/jfr

Starts and stops profiling with Java FlightRecorder as well as a few custom events.

Usage[]

Profiling contains several custom events below:

• minecraft.ServerTickTime: sampling event exposing average server tick times at one second intervals.
• minecraft.ChunkGeneration: time taken to generate individual chunk stages.
• minecraft.PacketRead | minecraft.PacketSent：network traffic.
• minecraft.WorldLoadFinishedEvent: initial world loading duration.

A summary JSON report is written both to the log file and in the debug folder accompanied by a .jfr recording ready to be analyzed in i.e JMC or any other profiler tool supporting the format.

Syntax[]

jfr start

Start JFR profiling.

jfr stop

Stop JFR profiling.

Result[]

Output[]

History[]