Understanding Spark Profiler (Using Fabric MC Server)

Hello all, I am trying to use Spark Profiler to analyse the performance of my fabric Minecraft server. After reading the docs, I went to look for the server thread:
net.minecraft.server.MinecraftServer.waitUntilNextTick()


As a basic metric of seeing how much downtime per cycle my server has, but I cannot find it. I am not sure if this is because I am using a Fabric server or otherwise. Here are the main threads I can see: (Attached)

And here is the link to the profiler (it should still be open): https://spark.lucko.me/vM7gnvDroO

Any advice would be appreciated.
understanding-spark-profiler-using-fabric-mc-server-v0-b6dpl39amp7d1.png
spark is a performance profiler for Minecraft clients, servers, and proxies.
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