spark is a performance profiling plugin/mod for Minecraft clients, servers and proxies.



Luck released this version on May 24, 2019

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  • Add a /spark tps command, for more accurate monitoring of the servers tick rate
  • Add /spark healthreport command, to view general information about the servers status
  • Add “activity log” feature for keeping track of past samples/memory dumps
  • Add support for generating heap dumps on non-hotspot JVMs (OpenJ9)
  • Add “combine-all” thread grouping argument
  • Allow sampling at fractions of a millisecond intervals
  • Improve the performance/efficiency of the sampler
  • Ensure that the plugin cleans up completely when disabled