Maverick @ethercflow

我等采石之人，当心怀建造大教堂之愿景。 Joined April 2018

Tweets

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40
Following

543
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72

Andrii Nakryiko @anakryiko

3 years ago

New blog post introducing and demoing retsnoop, a powerful and ergonomic tool for debugging confusing kernel errors and learning kernel internals through tracing. nakryiko.com/posts/retsnoop… #linux #tracing

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LWN.net @lwnnet

4 years ago

[$] Controlling the CPU scheduler with BPF lwn.net/Articles/87324…

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Thiago Navarro @navarr0thiag0

4 years ago

I am pleased to announce that our paper "An In-Kernel Solution Based on #XDP for #5G #UPF: Design, Prototype and Performance Evaluation" has been accepted 1st joint International Workshop on Network Programmability and Automation.

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Dmitry Vyukov @dvyukov

4 years ago

Compact NUMA-aware Locks talk starting in 15 mins: youtube.com/watch?v=b6jQnJ…

Dmitry Vyukov @dvyukov

4 years ago

Compact NUMA-aware Locks talk starting in 15 mins: youtube.com/watch?v=b6jQnJ…

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Brendan Gregg @brendangregg

4 years ago

eBPF Foundation announced. Founding members are Facebook, Google, Isovalent, Microsoft, Netflix. linuxfoundation.org/press-release/…

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Brendan Gregg @brendangregg

4 years ago

Computing Performance: On the Horizon, @usenix #LISA21 video & slides are now online. The current state, and my predictions, for CPUs, memory, disks, and more. youtube.com/watch?v=5nN1wj… usenix.org/conference/lis…

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Brendan Gregg @brendangregg

4 years ago

BPF Internals, @usenix #LISA21 video & slides are now online. From bpftrace to machine code, showing how it all works. youtube.com/watch?v=_5Z2AU… usenix.org/conference/lis… #eBPF

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Andrii Nakryiko @anakryiko

4 years ago

Having to deal with bpf_printk() recently for some fancier debug output I realized there are a bunch of interesting aspects worth sharing, especially taking into account various kernel versions. This resulted in nakryiko.com/posts/bpf-tips… Hope it will be helpful to someone.

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Brendan Gregg @brendangregg

4 years ago

"Computer Performance: On the Horizon" is my plenary talk for USENIX #LISA21 next week, Jun 1-3 bit.ly/usenixlisa21 @LISAConference

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Mark @offlinemark

4 years ago

New kernel post! This time: /proc/*/mem and how it writes to unwritable mem. Key takeaway: By walking page tables in software, the kernel can access userspace mem without directly dereferencing pointers it gets from userspace. (No WP/SMAP bits involved). offlinemark.com/2021/05/12/an-…

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Brendan Gregg @brendangregg

4 years ago

new blog post: What is Observability? brendangregg.com/blog/2021-05-2…

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Chris Wright @kernelcdub

4 years ago

Removing receive side bottlenecks in network performance with eBPF and CPUMAP...aka really ensuring flows are spread across cpus: developers.redhat.com/blog/2021/05/1…

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Cilium @ciliumproject

4 years ago

CFP for Networking & BPF Track for LPC 2021 is open! cilium.io/blog/2021/04/0…

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Filip @__unused

4 years ago

I wrote an article about BPF and Linux perf 🎉 The article includes step-by-step debugging with flame graphs, and many nitty-gritty details that tie themselves together at the end (i promise!). #bpf #ebpf #linux doordash.engineering/2021/04/01/exa…

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𝕃𝕖𝕠 𝔻𝕚 𝔻𝕠𝕟𝕒𝕥𝕠 🐯 @leodido

4 years ago

Prediction: exokernels era begins thanks to eBPF Interesting use of eBPF to reduce the access latency to NVMe (half of the overhead is due to the kernel storage path usually) 👇 arxiv.org/pdf/2102.12922…

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Arnaldo Carvalho de Melo @acmel

5 years ago

Meet bperf: Sharing hardware PMCs with BPF. git.kernel.org/acme/c/7fac83a… 2nd use of BPF skels in perf, first one was to use BPF in perf to count events in BPF programs. Again, thanks to @SongLiuBraving! #perf_tools #bpf #linux

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FUJITA Tomonori @brewaddict

5 years ago

gRPC server in kernel with eBPF; three times faster than go, two than Rust. Implemented minimum features just for benchmarking. eBPF (sockhash) gives hook for data arriving on TCP/UDP sockets, useful to implement server software? Or too restrictive? github.com/fujita/greeter…

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Abandoned account of Thorsten Leemhuis (1/5) @kernellogger

5 years ago

E2fsprogs 1.46.0 is out: "[…] now supports the fast_commit […] which improves the latency of the fsync(2) system call […] now supports the stable_inodes […] both file system encryption and the casefold feature enabled […] lore.kernel.org/linux-ext4/YBm… #linux #kernel #ext4

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Maverick @ethercflow

5 years ago

Thanks @anakryiko for helping me improve this article！

TiDB, powered by PingCAP @PingCAP

5 years ago

Thanks @anakryiko for helping me improve this article！

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Brendan Gregg @brendangregg

5 years ago

For anyone thinking of doing a eBPF observability/tracing startup: this costs companies ~$52, has >100 open source tools, and was written by an expert with >15 yrs tracing experience & help from other BPF experts brendangregg.com/bpf-performanc…