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Viewpoint Linux Distribution @ViewpointLinux

A Linux distribution with a focus on observability by @sevanjaniyan

Joined September 2020
  • Tweets 67
  • Following 1
  • Followers 20
5 Photos and videos
Red-black trees for BPF programs lwn.net/SubscriberLink/92412…

Red-black trees for BPF programs

Most of the kernel's code is written in C and intended to be run directly on the underlying har [...]

lwn.net
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bpftrace v0.17.0 released github.com/iovisor/bpftrace/…

Release v0.17.0 · bpftrace/bpftrace

[0.17.0] 2023-01-30 Added Support for 32-bit ARM systems #2360 Support BTF for kernel modules #2315 Add %rh option to print buffer as hex without \x #2445 Add stdbool.h to built-in header...

github.com
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Viewpoint Linux Distribution retweeted
erthalion@erthalion
30 Dec 2022
New blog post for those who are curious about performance of BPF programs: erthalion.info/2022/12/30/bp… We talk about topics like Instructions Set versions, Top-Down for BPF and simple modeling.
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Viewpoint Linux Distribution retweeted
Nicolas Fränkel 🇪🇺🇺🇦🇬🇪@nicolas_frankel
14 Dec 2022
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
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Viewpoint Linux Distribution retweeted
Abandoned account of Thorsten Leemhuis (1/5)@kernellogger
30 Nov 2022
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/20221130…
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Viewpoint Linux Distribution retweeted
Brendan Gregg@brendangregg
9 Nov 2022
Netflix/Intel working together to find low-level PMC-based perf wins in the cloud (by my colleagues Vadim and Harshad) netflixtechblog.com/seeing-t…

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Viewpoint Linux Distribution retweeted
Guilherme Amadio@GuilhermeAmadio
1 Nov 2022
Trying out Python 3.12's support for Linux #perf (docs.python.org/3.12/howto/p…), along with JIT compiled C code and CLING_PROFILE=1 from ROOT to make it more fun. See full flamegraph at cern.ch/amadio/flamegraphs/d….
Flamegraph showing Python 3.12 support for perf in a ROOT data analysis which also makes use of C JITted code.

ALT Flamegraph showing Python 3.12 support for perf in a ROOT data analysis which also makes use of C JITted code.
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OSNoise Tracer: Who Is Stealing My CPU Time? (2021) youtube.com/watch?v=dY8ixS3K…

OSNoise Tracer: Who Is Stealing My CPU Time?

🎥 Watch all the P99 Conf 2021 talks here: https://www.p99conf.io/...

youtube.com
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BPF for HID drivers lwn.net/SubscriberLink/90910…

BPF for HID drivers

The Human Interface Device (HID) standard dates back to the Windows 95 era. It describes how de [...]

lwn.net
BPF as a safer kernel programming environment lwn.net/SubscriberLink/90909…

BPF as a safer kernel programming environment

For better or worse, C is the lingua franca in the world of kernel engineering. The core logic [...]

lwn.net
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Viewpoint Linux Distribution retweeted
Daniel Xu@__dxu
9 Sep 2022
TIL: you can target bpf on compiler explorer!
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Viewpoint Linux Distribution retweeted
eBPF Summit@eBPFsummit
1 Sep 2022
🐝 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/
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The untold story of [e]BPF youtube.com/watch?v=DAvZH137…

Kernel Recipes 2022 - The untold story of BPF

This talk will uncover for the first time the true origin of ‘Exten...

youtube.com
What’s new in Ftrace - Steven Rostedt @ Kernel Recipes 2022 kernel-recipes.org/en/2022/f…
Viewpoint Linux Distribution retweeted
Brendan Gregg@brendangregg
15 Aug 2022
Replying to @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!
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Viewpoint Linux Distribution retweeted
ebpftoy@ebpftoy
5 Aug 2022
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); }}'
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Viewpoint Linux Distribution retweeted
Behdad Esfahbod@behdadesfahbod
30 Jul 2022
More @HarfBuzz study: "The case of the slow hb-ft h_advance function" docs.google.com/document/d/1… 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.

HarfBuzz Study: The case of the slow hb-ft h_advance function

HarfBuzz Study: The case of the slow hb-ft h_advance function behdad July 29, 2022 Introduction We investigate why measuring the horizontal advance-width of glyphs via FreeType font-functions in...

docs.google.com
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Viewpoint Linux Distribution retweeted
LWN.net@lwnnet
18 Jul 2022
[$] The BPF panic function lwn.net/Articles/901284/ #LWN
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Viewpoint Linux Distribution retweeted
GCC - GNU Toolchain
@gnutools
17 Jul 2022
Tips and tricks for #GDB DDD. begriffs.com/posts/2022-07-1…

Pleasant debugging with GDB and DDD

Getting the most out of the classic Linux/BSD debugger

begriffs.com
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Viewpoint Linux Distribution retweeted
POSETTE: An Event for Postgres 🌟 🎥 #PosetteConf
@PosetteConf
27 Apr 2022
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
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