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All Things P99

The event for developers who care about P99 percentiles and high-performance, low-latency applications

Using eBPF Off-CPU Sampling to See What Your DBs are Really Waiting For

At last year’s P99 CONF, Tanel introduced using eBPF Task State Arrays to track Linux apps’ thread states/activity without built-in instrumentation. This year, he demos “xcapture,” showing MySQL, Postgres, and DuckDB time spent on CPU and in sleep, all without altering source code.

20 minutes

Tanel Poder, Performance Nerd at PoderC LLC

Tanel Poder is a long-time computer performance geek, working on various complex systems like (Oracle) database clusters, modern Big Data & cloud technologies and anything running on Linux/Unix. He has built and fixed enterprise data systems all around the world, this has also resulted in building a few small-but-very-fun tech companies around better tools and methods. He has two patents in the data virtualization space and has realized that this is enough. In addition to his R&D, he occasionally delivers consulting, advisory and training to companies and talks about performance & troubleshooting both at public conferences and his video channels available at his website.

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P99 CONF OCT. 22 + 23, 2025

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