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Rough notes for Slack's Secret STDERR Messages, where I used eBPF and other tools to debug Slack's mysterious crashes (2021).

Rough notes for Analyzing a High Rate of Paging, using a mix of traditional, Ftrace, and BPF performance tools.

The story of ZFS Is Mysteriously Eating My CPU including a hard-to-believe flame graph.

I made an appearance at IntelON to talk about Processor Benchmarking ( slideshare, PDF, video (2021).

Slides for my YOW! talk on Computing Performance 2021: What's on the Horizon, covering processors, memory, disks, networking, hypervisors, and more ( slideshare, PDF).

A page to summarize my Linux Performance related material.

Here is my bio and anti-bio.ДЇor a short selection of most popular content, see my Overview page.Дocuments I've written, in approximately reverse chronological order: I have a personal blog, and I'm also on twitter. While I currently work on large scale cloud computing performance at Netflix, this site reflects my own opinions and work from over the years. I use this site to share and bookmark various things, mostly my work with computers. YOW! 2018 Cloud Performance Root Cause Analysis at Netflix Two kernel mysteries and the most technical talk I've ever seenД«PF Performance Tools: Linux System and Application Observability (book)

Systems Performance: Enterprise and the Cloud, 2nd Edition

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How To Add eBPF Observability To Your ProductД«PF binaries: BTF, CO-RE, and the future of BPF perf tools USENIX LISA2021 Computing Performance: On the Horizon

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