Fabric Server, Spark Report

Hello. Been using a fabric server on 1.20.1. I recently did a spark report and saw that this was using the most resources. I was wondering if somebody could explain to me what it is, and how I could improve the performance of my server.

libpthread-2.31.so.pthread_cond_timedwait@@GLIBC_2.3.2()83.82%
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