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Tanel Poder 🇺🇦
@TanelPoder
Creator of 0x.tools and a long time computer performance nerd. Performance & Troubleshooting Training: learn.tanelpoder.com
Miami, FL
tanelpoder.com
Joined February 2009
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    Tanel Poder 🇺🇦
    @TanelPoder
    May 15
    Almost Summer Sale 2026: All my flagship video courses discounted until end of May! Plus *free* Exadata Internals & Advanced Performance Metrics seminar videos! tanelpoder.com/posts/almost-s…
    1.2K
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    Tanel Poder 🇺🇦
    @TanelPoder
    Jun 17, 2024
    Harlequin: The SQL IDE for Your Terminal (works also with DuckDB!) harlequin.sh
    97K
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    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
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    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
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    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
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    Tanel Poder 🇺🇦
    @TanelPoder
    Nov 20, 2022
    Also, this seems pretty unlikely:
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    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
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    Tanel Poder 🇺🇦
    @TanelPoder
    Oct 28, 2018
    New blog: Visualizing SQL Plan Execution Time with FlameGraphs blog.tanelpoder.com/posts/visualiz…
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    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
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    Tanel Poder 🇺🇦
    @TanelPoder
    Apr 30, 2025
    Optimizing eBPF I/O latency accounting when running 37M IOPS, on 384 CPUs tanelpoder.com/posts/optimizi…
    17K
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    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
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    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-…
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    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…
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    Tanel Poder 🇺🇦
    @TanelPoder
    Sep 9, 2017
    A nice Oracle 12c DB Architecture poster (PDF): buff.ly/2je0Hsp
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