Minecraft:Commands/perf

Template:Infobox command Captures information and metrics about the game such as tick durations, used heap sizes, and other more detailed stats.

Note that this command can only be executed on a dedicated server; use

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Template:Redr run the performance profiler on a locally hosted world.

Usage

When a performance profiling session is stopped, a ZIP file is created in .minecraft/debug/profiling with the following structure:

• yyyy-MM-dd_HH.mm.ss-<world name>-<game version>.zip
  • system.txt
  • server
    • deviations
      • ticktime
        • <current tick>@yyyy-MM-dd_HH.mm.ss.SSS.txt
    • levels
      • <namespace>
        • <dimension name>
          • block_entities.csv: Contains a list of block entities in the world in the format x,y,z,type.
          • chunks.csv: Contains a list of chunk information in the format

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Template:Redr.

• • • • • • entities.csv: Contains a list of entities in the world in the format

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• • • • • • entity_chunks.csv: Contains a list of loaded chunks in the dimension in the format

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• • • • • • example_crash.txt: An example crash file.
          • stats.txt: Contains some stats.
    • metrics
      • cpu.csv
      • event_loops.csv
      • jvm.csv
      • mailboxes.csv
      • ticking.csv
    • classpath.txt: Contains file paths of external jars the game is using.
    • gamerules.txt: A plain text file containing a list of game rules and their values (<gamerule>=<value>).
    • modules.txt: Contains external modules the game is using.
    • profiling.txt: The profiler results.
    • server.properties.txt: Current Minecraft:server.properties.
    • stats.txt: Contains some stats.
    • threads.txt: All running threads.

Syntax

perf start

Starts a 10-second performance profiling recording.

perf stop

Ends the recording early before 10 seconds have passed.

Outputs

{{#vardefine:output-table-lines|}}{{#vardefine:output-table-lines|-2}}{{#vardefine:output-table-lines-now|}}{{#vardefine:command-num-now|}}{{#vardefine:command-line-now|}}{{#vardefine:commands-num|}}{{#vardefine:output-edition-num-now|}}{{#vardefine:output-edition-line-now|}}{{#vardefine:output-editions-num|}}{{#vardefine:je-outputs-dis|}}

{{#vardefine:output-table-lines|}}{{#vardefine:situation-{{#var:output-table-lines}}|On fail}}{{#vardefine:output1-{{#var:output-table-lines}}|N/A}}{{#vardefine:output2-{{#var:output-table-lines}}|0}}{{#vardefine:output3-{{#var:output-table-lines}}|0}}{{#vardefine:command-row-{{#var:commands-num}}|}}{{#vardefine:output-editions-num|}}{{#vardefine:output-edition-{{#var:output-editions-num}}|je}}{{#vardefine:output-edition-row-{{#var:output-editions-num}}|1}} {{#vardefine:output-table-lines|}}{{#vardefine:situation-{{#var:output-table-lines}}|On success}}{{#vardefine:output1-{{#var:output-table-lines}}|N/A}}{{#vardefine:output2-{{#var:output-table-lines}}|1}}{{#vardefine:output3-{{#var:output-table-lines}}|0}}{{#vardefine:command-row-{{#var:commands-num}}|}}{{#vardefine:output-edition-row-{{#var:output-editions-num}}|}}

{{#vardefine:output-table-lines|}}{{#vardefine:output-table-lines|-2}}{{#vardefine:output-table-lines-now|}}{{#vardefine:command-num-now|}}{{#vardefine:command-line-now|}}{{#vardefine:commands-num|}}{{#vardefine:output-edition-num-now|}}{{#vardefine:output-edition-line-now|}}{{#vardefine:output-editions-num|}}{{#vardefine:je-outputs-dis|}}

Navigation

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