https://engineering.fb.com/2025/01/21/production-engineering/strobelight-a-profiling-service-built-on-open-source-technology/ Read on how Meta built Strobelight which combines a ton of open source tools into one profiling utopia, providing engineers with much needed information such as heap dumps from services using jemalloc, flame graphs, trace visualisations, e.t.c. This helps provide much needed performance wins across their entire compute fleet including a particular case that led to saving an estimated 15,000 servers in capacity per year