Maverick

我等采石之人，当心怀建造大教堂之愿景。

[Maverick @ethercflow]

@Blankwonder 好的，谢谢，也找到了您之前发的配置单了 :)

[Andrii Nakryiko @anakryiko]

New blog post introducing and demoing retsnoop, a powerful and ergonomic tool for debugging confusing kernel errors and learning kernel internals through tracing. https://t.co/MLeggqXb1X #linux #tracing

[LWN.net @lwnnet]

[$] Controlling the CPU scheduler with BPF https://t.co/a7rKOL8ve4

[Thiago Navarro @navarr0thiag0]

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.

[Dmitry Vyukov @dvyukov]

Compact NUMA-aware Locks talk starting in 15 mins:
https://t.co/Xkw3ZlFFLk

[Brendan Gregg @brendangregg]

eBPF Foundation announced. Founding members are Facebook, Google, Isovalent, Microsoft, Netflix. https://t.co/MUCOyKo0gl

[Brendan Gregg @brendangregg]

Computing Performance: On the Horizon, @usenix #LISA21 video & slides are now online. The current state, and my predictions, for CPUs, memory, disks, and more. https://t.co/8wWXZ1pJim https://t.co/GO2TQ0b56L

[Brendan Gregg @brendangregg]

BPF Internals, @usenix #LISA21 video & slides are now online. From bpftrace to machine code, showing how it all works. https://t.co/NB4qhk9zx5 https://t.co/UT8V4HdPbS #eBPF

[Andrii Nakryiko @anakryiko]

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 https://t.co/wutjqgxXF4 Hope it will be helpful to someone.

[Brendan Gregg @brendangregg]

"Computer Performance: On the Horizon" is my plenary talk for USENIX #LISA21 next week, Jun 1-3 https://t.co/dilkHF986h @LISAConference

[Mark @offlinemark]

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). https://t.co/U9IOeyHIc5

[Brendan Gregg @brendangregg]

new blog post: What is Observability? https://t.co/D33QLsx5Nx

[Chris Wright @kernelcdub]

Removing receive side bottlenecks in network performance with eBPF and CPUMAP...aka really ensuring flows are spread across cpus: https://t.co/5UaHsEriXH

[Cilium @ciliumproject]

CFP for Networking & BPF Track for LPC 2021 is open!

https://t.co/5RqNlDlE00

[Filip @__unused]

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

https://t.co/e1m5qiiDcF

[𝕃𝕖𝕠 𝔻𝕚 𝔻𝕠𝕟𝕒𝕥𝕠 @leodido]

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) 👇
https://t.co/Ao5kj8a5yi

[Arnaldo Carvalho de Melo @acmel]

Meet bperf: Sharing hardware PMCs with BPF.

https://t.co/08nZl7bzum

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

[FUJITA Tomonori @brewaddict]

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? https://t.co/qRBK1AOA7j

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

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 […]

https://t.co/lSESuIxddQ #linux #kernel #ext4