cargo-trace
bcc
cargo-trace | bcc | |
---|---|---|
1 | 71 | |
35 | 19,546 | |
- | 1.5% | |
10.0 | 9.2 | |
about 3 years ago | 3 days ago | |
Rust | C | |
- | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
cargo-trace
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Dwarf-Based Stack Walking Using eBPF
Are the authors here? Thanks for this! I'm always thrilled to see advances in profiling tools.
I'm curious what they have to say about complexity/necessity of interpreting all of DWARF. cargo-trace (an neat and conceptually similar but abandoned project, I think) [1] says:
> It can be empirically determined that almost all dwarf programs consist of a single instruction and use only three different instructions. rip+offset, rsp+offset or *cfa+offset, where cfa is the rsp value of the previous frame. The result of the unwinding is an array of instruction pointers.
Do you find this to be true? Is more complex interpreting of DWARF necessary?
And in the lkml thread linked from the article, Linus is extremely pessimistic about DWARF unwinding, [2] I'm sure not without justification. He's talking about kernel stacks, and I think the trade-off is different when you're trying to profile existing userspace applications and libraries compiled and implemented however, but nonetheless I'm curious to hear the authors say how applicable they think his points are.
[1] https://github.com/dvc94ch/cargo-trace
[2] https://lkml.org/lkml/2012/2/10/356
bcc
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eBPF: Unleashing Kernel Magic for Modern Infrastructure
But wait, there's more! Enter the BCC toolkit and library, your trusty sidekick in simplifying the arcane art of writing eBPF applications. With BCC by your side, you'll be wielding eBPF like a seasoned pro in no time.
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Linux: Easy Keylogger with eBPF (2018)
Nice - I normally use [bash-readline](https://github.com/iovisor/bcc/blob/master/tools/bashreadlin...) when coworking/co-inhabiting a server or training someone.
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eBPF Documentary
One of the big wins is not so much “build and run your own stuff” but there are very nice low-cost (in terms of compute) performance utilities built on eBPF
https://github.com/iovisor/bcc
There are so many utilities in that list; there’s a diagram midway down the readme which tries to help show their uses. bcc-tools should be available in any distro.
Also, Brendan Gregg does a ton of performance stuff that is worth knowing about if you check out his other work. Not eBPF only. Flame graphs are useful.
- Bpftop: Streamlining eBPF performance optimization
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eBPF Tutorial by Example 16: Monitoring Memory Leaks
Reference: https://github.com/iovisor/bcc/blob/master/libbpf-tools/memleak.c
- eBPF Tutorial by Example 9: Capturing Scheduling Latency and Recording as Histogram
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Uprobes Siblings - Capturing HTTPS Traffic: A Rust and eBPF Odyssey
In this article, we'll build a basic version of an HTTPS sniffer, inspired by bcc-sslsniff.py, but we'll use Rust and Aya. We're going to demonstrate the capabilities of uprobes by employing uprobe and uretprobe along with familiar maps like PerCpuArray, HashMap, and PerEventArray. This will be a straightforward example to help us explore how uprobes function.
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Issue XDP_REDIRECT on other interface in the same namespace
As xpd program I am using the BCC example xdp_redirect_map.py in skb mode as my NIC does not support native mode, attaching the program to veth2 and a dummy function to veth3
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Linux runtime security agent powered by eBPF
https://github.com/iovisor/bcc/blob/master/docs/reference_gu...
- eBPF Practical Tutorial: Capturing SSL/TLS Plain Text Data Using uprobe
What are some alternatives?
framehop - Stack unwinding library in Rust
libbpf - Automated upstream mirror for libbpf stand-alone build.
parca-agent - eBPF based always-on profiler auto-discovering targets in Kubernetes and systemd, zero code changes or restarts needed!
bpftrace - High-level tracing language for Linux eBPF [Moved to: https://github.com/bpftrace/bpftrace]
scalene - Scalene: a high-performance, high-precision CPU, GPU, and memory profiler for Python with AI-powered optimization proposals
ebpf-for-windows - eBPF implementation that runs on top of Windows
zfs - OpenZFS on Linux and FreeBSD
linux - Linux kernel source tree
nokogiri-rust - Ruby FFI wrapper around scraper crate to be used instead of Nokogiri. Status: proof of concept.
libbpf-bootstrap - Scaffolding for BPF application development with libbpf and BPF CO-RE
flamegraph - Easy flamegraphs for Rust projects and everything else, without Perl or pipes <3
libguestfs - library and tools for accessing and modifying virtual machine disk images. PLEASE DO NOT USE GITHUB FOR ISSUES OR PULL REQUESTS. See the website for how to file a bug or contact us.