It was only a matter of time before somebody found a way to inject BPF into the CPU scheduler. This patch series, posted by Tejun Heo and containing work by David Vernet, Josh Don, and Barret Rhoden, does exactly that. The cover letter covers the motivation behind this work in detail: One of our main goals was to lower the barrier to entry for experimenting with the scheduler. sched_ext provides e
The Evolving eBPF Toolchain
These days there is an ever-growing list of tools and frameworks for working with eBPF, all at varying levels of abstraction. There does seem to be a few that sit at the core of the rest of the eBPF ecosystem. However, the ecosystem is changing rapidly, and I’ve found it to be a bit difficult to navigate through the sea of information that’s out there and understand which tools are the current “st
Offloading BPF Implementation to FPGA-NIC したいねって話
Career - design, adaption and diversity - for EMC I&D eventMiya Kohno
At InfinyOn we are seeing an increasing amount of traffic in Infinyon Cloud. Given our current projections we anticipate over 1 million edges to connect our platform in the next 12-18 months. One of bottlenecks is the compute resources needed to process ingress traffic. We have a couple of places in our cloud offering where we needed to intercept TCP network traffic, perform some analysis on the f
In a recent blog post, Alban Crequy and Mauricio Vásquez benchmarked egress filtering solutions in the Linux kernel and compared iptables, ipsets, and BPF at the tc hook. That is exciting, not only because egress benchmarks are missing with everyone focusing on ingress (e.g., XDP), but also because they: included short CPU traces, allowing us to understand what is happening. provided the code and
This is an adapted transcript of a talk I gave at Promcon 2018. You can find slides with additional information on our Prometheus deployment and presenter notes here. There's also a video. Tip: you can click on the image to see the original large version. Here at Cloudflare we use Prometheus to collect operational metrics. We run it on hundreds of servers and ingest millions of metrics per second
BPF and async Rust
With libbpf-rs, bindings to libbpf (canonical C BPF library), building BPF applications in Rust is easy. However, libbpf-rs doesn't work with async/await. Say, to send information from kernel with BPF over protocols like gRPC, you have to implement lots instead of using the existing async libraries. To address the above problem, I implemented libbpf-async, complementary to libbpf-rs, providing API
eBPF Documentary
Recent posts: 17 Mar 2024 » The Return of the Frame Pointers 10 Mar 2024 » eBPF Documentary 28 Apr 2023 » eBPF Observability Tools Are Not Security Tools 01 Mar 2023 » USENIX SREcon APAC 2022: Computing Performance: What's on the Horizon 17 Feb 2023 » USENIX SREcon APAC 2023: CFP 02 May 2022 » Brendan@Intel.com 15 Apr 2022 » Netflix End of Series 1 09 Apr 2022 » TensorFlow Library Performance 19 M
TIL: eBPFは素晴らしい
Filip Nikolovskiのブログより。 仕事でマイクロ・サービスのトレースや可観測性(Observability)について仕事で調べていた時に、Pixielabsに出くわしました。このツールは、アプリの内部にインスツルメンテーション(計器一式)や特別なコードを入れなくても、アプリのトラブルシューティングを即座に行えると宣伝していて、私には✨魔法✨のように聞こえました。だから当然、この技術が機能する理由について、もう少し詳しく知りたいと思い、サイトをスクロールしていくと、「インスツルメンテーションなし」のセクションの下に、この頭文字をとったeBPFがありました。 インターネットでさらに調べて、デザインペーパーを読んで、いくつかのビデオを見た後、この技術が私の目に留まったと言っても過言ではないので、メモを書きたいと思いました。この投稿があなたの興味をさらに刺激することを願っています。
eBPFって何だろう｜oraccha
eBPFには前々から興味があったので、ちょっと調べてみた。資料はいろいろある。日本語だと（会員登録が必要なので最後まで読めないが）「Berkeley Packet Filter入門」が詳しい。英語でよければ「BPF: Linux kernel code execution engine」とか。 eBPF以前オリジナルのBPF (Berkeley Packet Filter)が登場したのは90年代初頭で、tcpdumpに組み込まれているので知らずにお世話になっている人も多いかと。論文（「The BSD Packet Filter: A New Architecture for User-level Packet Capture」[USENIX93]）が出版されたのが1993年で、著者の一人はEDTモデルでも言及したVan Jacobson先生。 tcpdumpやwiresharkのようなツー
The Teleport Access PlatformThe easiest, most secure way to access and protect your infrastructure Teleport Access On-demand, least privileged access, on a foundation of cryptographic identity and zero trust
Let's build a simple system calls monitoring dashboard using bpftrace and streamlit
% time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 49.67 0.000301 301 1 execve 14.69 0.000089 11 8 mmap 6.44 0.000039 13 3 openat 4.46 0.000027 9 3 mprotect 4.46 0.000027 6 4 newfstatat 3.47 0.000021 5 4 pread64 3.14 0.000019 19 1 munmap 2.81 0.000017 8 2 close 2.64 0.000016 5 3 brk 2.15 0.000013 6 2 read 2.15 0.000013 13 1 1 access 1
BPF, eBPF, XDP and Bpfilter… What are these things and what do they mean for the enterprise? - Netronome
BPF, eBPF, XDP and Bpfilter… What are These Things and What do They Mean for the Enterprise? By Netronome | Apr 16, 2018 You may have been following the development of the extended Berkeley Packet Filter (eBPF) in the kernel community since 3.15, or you may still associate the Berkeley Packet Filter with the work Van Jacobson did in 1992. You may have used BPF for years with tcpdump, or you may
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Summary libbpf-rs provides safe Rust bindings to libbpf as well as a cargo plugin to help you develop “Compile Once - Run Everywhere” eBPF applications. Use libbpf-rs over BCC to produce smaller, more efficient, and more predictable applications. Background eBPF (BPF) programs have traditionally been written using BPF compiler collection (BCC). The application would then call into BCC using the C+
Exploring BPF ELF Loaders at the BPF Hackfest By Lorenz Bauer / Alban Crequy · October 9, 2018 Just before the All Systems Go! conference, we had a BPF Hackfest at the Kinvolk office and one of the topics of discussion was to document different BPF ELF loaders. This blog post is the result of it. BPF is a new technology in the Linux kernel, which allows running custom code attached to kernel funct
前回（LinuxのBPFとbccでデバッグする - φ(・・*)ゞ ｳｰﾝ カーネルとか弄ったりのメモ）はbccを使ってkprobeでカーネル内の関数にprobeを設定したので今回はユーザーランドのほうでuprobesを使うメモ。 fork()が呼ばれたときにプロセス名、pid等を表示する。 #!/usr/bin/env python from bcc import BPF bpf_source = """ #include <uapi/linux/ptrace.h> void fork_enter(struct pt_regs *ctx) { bpf_trace_printk("fork()\\n"); } """ b = BPF(text=bpf_source) b.attach_uprobe(name="c", sym="fork", fn_name="fork_enter") wh
GitHub - pathtofile/bpf-pipesnoop: Example program using eBPF to log data being based in using shell pipes
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The BPF extensible scheduler class [LWN.net]
Routing traffic in Rust using eBPF
BPF Isn’t Just About Speed
Introducing ebpf_exporter
BPF to transform SSH Sessions to Structured Event
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Create new page · draios/sysdig Wiki
libbpf-rs: eBPF for the Rust ecosystem
Kinvolk: Exploring BPF ELF Loaders at the BPF Hackfest
bccでuprobes - φ(・・*)ゞ ｳｰﾝ カーネルとか弄ったりのメモ