SparkServer + client profiler — /spark profiler

Version: 1.10.140 · MC 1.21.1 · NeoForge 21.1.234 · Java 21

About

The de facto profiler for modded MC servers. Run /spark profiler --timeout 60 to record a 60 s profile, upload to spark.lucko.me, then read the flame graph to find which mod / mixin is eating tick time. Indispensable for diagnosing TPS drops.

Getting started

Auto-loads with the pack. Open JEI/EMI and search for the mod name to see all the items and recipes it adds.

What you can do

Endgame goals

Endgame use of Spark integrates its top items into your main base — see the official docs for the full progression.

Integrations with other AYN mods

Tutorials & resources