Tanel Poder 🇺🇦 (@TanelPoder) / X

Tanel Poder 🇺🇦

17K posts

Tanel Poder 🇺🇦

@TanelPoder

Creator of 0x.tools and a long time computer performance nerd. Performance & Troubleshooting Training: learn.tanelpoder.com

Miami, FL

Joined February 2009

Pinned
Tanel Poder 🇺🇦
@TanelPoder
Jun 18
Releasing an eBPF Runtime Reporter and Profiler tool (brr). I've used it for profiling eBPF programs themselves. It unifies bpftop-like utilization/event frequency monitoring with perf_events based CPU sampling, with source code line mapping. github.com/tanelpoder/brr/
4.3K
Tanel Poder 🇺🇦
@TanelPoder
Jun 17, 2024
Harlequin: The SQL IDE for Your Terminal (works also with DuckDB!) harlequin.sh
97K
Tanel Poder 🇺🇦
@TanelPoder
Apr 10, 2025
Wow this is a pretty cool database schema design/visualization tool, I might end up using it. And it's AGPL open source! drawdb.app
20K
Tanel Poder 🇺🇦
@TanelPoder
Dec 20, 2024
Computers are networks! Even your CPUs are networks, but thats for another day... If you want some holiday reading about how I achieved 66GiB/s of reads and 11M IOPS in a single workstation (back in 2020) and which bottlenecks I hit, check this out! tanelpoder.com/posts/11m-iops…
22K
Tanel Poder 🇺🇦
@TanelPoder
Apr 2, 2019
I usually try to stick with very basic Linux performance tools (vmstat,iostat,sar) to avoid depending on a customer's server having fancier tools installed. But one awesome tool that makes me break this philosophy is "dstat". It does formatting so much better - recommended!
GIF
Tanel Poder 🇺🇦
@TanelPoder
Nov 20, 2022
Also, this seems pretty unlikely:
Tanel Poder 🇺🇦
@TanelPoder
May 3, 2025
Computers are networks: If you want to read about modern PCIe topology (root complexes!) and potential I/O bottlenecks in Linux kernel software level, read this first first! 11M IOPS & 66 GiB/s of IO throughput in a single AMD ThreadRipper workstation: tanelpoder.com/posts/11m-iops…
14K
Tanel Poder 🇺🇦
@TanelPoder
Oct 28, 2018
New blog: Visualizing SQL Plan Execution Time with FlameGraphs blog.tanelpoder.com/posts/visualiz…
Tanel Poder 🇺🇦
@TanelPoder
Jan 24, 2025
Profile Explorer is a tool for viewing CPU profiling traces collected through the Event Tracing for Windows (ETW) infrastructure on machines with x64 and ARM64 CPUs github.com/microsoft/prof…
9.9K
Tanel Poder 🇺🇦
@TanelPoder
Apr 30, 2025
Optimizing eBPF I/O latency accounting when running 37M IOPS, on 384 CPUs tanelpoder.com/posts/optimizi…
17K
Tanel Poder 🇺🇦
@TanelPoder
Jan 4, 2025
Old blog from 2018, but still worth reading to remind that SQL plan execution is just program execution like any other. tanelpoder.com/posts/visualiz…
15K
Tanel Poder 🇺🇦
@TanelPoder
May 18, 2018
My Performance & Troubleshooting scripts (TPT) for Oracle are now in GitHub and open sourced blog.tanelpoder.com/2018/05/18/my-…
Tanel Poder 🇺🇦
@TanelPoder
Oct 8, 2018
New blog: Troubleshooting log file switch (checkpoint incomplete) wait events and LGWR waiting for checkpoint progress. blog.tanelpoder.com/posts/log-file…
Tanel Poder 🇺🇦
@TanelPoder
Sep 9, 2017
A nice Oracle 12c DB Architecture poster (PDF): buff.ly/2je0Hsp