SESSION ON-DEMAND

All Things P99

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

xCapture v3: Efficient, Always-On Thread Level Observability with eBPF

xCapture is an eBPF-based Linux thread activity measurement tool for systematic performance troubleshooting and optimization that can go very deep. Thanks to modern eBPF task iterators, xCapture’s passive sampling mode does not have to inject probes to execution paths of other tasks. For itself, xCapture uses at least an order of magnitude less CPU time compared to running “top.” In this talk, I’ll launch the prod/GA ready version of xCapture v3 + xtop and demonstrate how it helps with real life troubleshooting scenarios.

20 minutes
Register for access to all 60+ sessions available on demand.
Fill out the form to watch this session from the P99 CONF 2025 livestream. You’ll also get access to all available recordings.

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.