Viewpoint Linux Distribution @ViewpointLinux

Red-black trees for BPF programs lwn.net/SubscriberLink…

bpftrace v0.17.0 released github.com/iovisor/bpftra…

New blog post for those who are curious about performance of BPF programs: erthalion.info/2022/12/30/bpf… We talk about topics like Instructions Set versions, Top-Down for BPF and simple modeling.

I just finished reading @lizrice's "What is #eBPF?", an easy-to-read introduction to eBPF for non-sysadmins (like me) isovalent.com/data/liz-rice-… It got me interested in trying to get my hands dirty as I'm a learning-by-doing guy

Tejun Heo proposed a "BPF extensible scheduler class" for the #Linux #kernel's process scheduler which allows scheduling policies to be implemented as #BPF (aka #eBPF) programs: lore.kernel.org/all/2022113008…

Netflix/Intel working together to find low-level PMC-based perf wins in the cloud (by my colleagues Vadim and Harshad) netflixtechblog.com/seeing-through…

Trying out Python 3.12's support for Linux #perf (docs.python.org/3.12/howto/per…), along with JIT compiled C++ code and CLING_PROFILE=1 from ROOT to make it more fun. See full flamegraph at cern.ch/amadio/flamegr….

OSNoise Tracer: Who Is Stealing My CPU Time? (2021) youtube.com/watch?v=dY8ixS…

BPF for HID drivers lwn.net/SubscriberLink…

BPF as a safer kernel programming environment lwn.net/SubscriberLink…

TIL: you can target bpf on compiler explorer!

🐝 eBPF Summit Schedule is now live 🐝 32 talks for eBPF Summit 2022 across eBPF in the Real World, for Networking, for Security, and Programming and Internals ebpf.io/summit-2022/

The untold story of [e]BPF youtube.com/watch?v=DAvZH1…

What’s new in Ftrace - Steven Rostedt @ Kernel Recipes 2022 kernel-recipes.org/en/2022/ftrace…

@andrewbrown I can't remember how many times I've compiled MySQL or another app in a certain (more debuggable) way, populated a database, tried a workload, no another workload, no another...just for one tool screenshot!

Kill program that access to /tmp/secret.txt #eBPF bpftrace --unsafe -e 'tracepoint:syscalls:sys_enter_openat { if (strncmp("/tmp/secret.txt", str(args->filename), 15) == 0) { signal(9); }}'

More @harfbuzz study: "The case of the slow hb-ft h_advance function" docs.google.com/document/d/1ws… I investigate why measuring the horizontal advance-width of glyphs via FreeType font-functions in HarfBuzz is ten times slower than using the internal HarfBuzz font-functions.

[$] The BPF panic function lwn.net/Articles/90128… #LWN

Tips and tricks for #GDB DDD. begriffs.com/posts/2022-07-…

If analyzing @PostgreSQL performance 🔎 📈 is your jam, this 📽️ talk is for you. It's by @AndresFreundTec of Microsoft & of the PG core team—and it's about "Analyzing Postgres performance problems using perf & eBPF." A true deep dive from an expert. Enjoy! youtu.be/HghP4D72Noc