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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.
Optimizing your tests in 5 steps
2 projects | dev.to | 9 Feb 2022
Even the most general profiler tool will show you each statement's accumulated time. These are called statistical profilers and give you a panoramic view of what the test is doing. An example of such a profiler is rbspy:
Fantastic Symbols and Where to Find Them - Part 2
4 projects | dev.to | 27 Jan 2022
As a result, you need to craft a specific routine for each interpreter runtime (in some cases, each version of that runtime) to obtain symbol information. Educated eyes might have already noticed, it's not an easy undertaking considering the sheer amount of interpreted languages out there. For example, a very well known Ruby profiler, rbspy, generates code for reading internal structs of the Ruby runtime for each version.
Why Is JRuby Slow?
2 projects | news.ycombinator.com | 28 May 2021
I was a bit surprised to find out that the tool used to generate the flamegraph for Ruby (rbspy ) is written in Rust. lol
How SerpApi sped up data extraction from HTML from 3s to 800ms (or How to profile and optimize Ruby code and C extension)
11 projects | dev.to | 2 Feb 2021
c function is not very helpful to find the performance problem, so we dug deeper.
Sloth – A Mac app that shows all open files, directories, sockets, etc.
5 projects | news.ycombinator.com | 16 Feb 2023
On Linux, this can be done using BPF (Berkley Packet Filter). In fact there is a tool in BCC called filetop, which lists reads/writes by process and file.
Announcing allocscope: a tool for tracking allocations in Rust / C++ / C apps
2 projects | reddit.com/r/rust | 15 Feb 2023
I recommend you investigate using eBPF hooks in the linux kernel for this allocation tracking, it is measurable much faster. E.g. https://github.com/iovisor/bcc/blob/master/tools/memleak.py
3 projects | reddit.com/r/eBPF | 1 Feb 2023
Hey there! Of course. There are a few good examples here and here. Yes, they're specific tools (which I, by the way, do recommend), but you can have a look at the BPF code here as well.3 projects | reddit.com/r/eBPF | 1 Feb 2023
Thanks for the link :) this one seems pretty much like what I was looking for, with Vxlan encapsulation, will bother you if i face issues on running the script they have there. Looks like couple of years old since the last contribution to that git page: https://github.com/iovisor/bcc/tree/master/examples/networking/tunnel_monitor
Can I just have KubeCTL access? I used to have it in my old company
2 projects | reddit.com/r/sre | 31 Jan 2023
What we saw was stalling in the kernel run queue. One of the other people on our team did some debugging with eBPF. I think they may have used runqlen.py. But as soon as they evicted the one damaging pod from the machine, all the other workloads were no longer starved.
Navigate your way to production bliss with Caretta
2 projects | dev.to | 9 Jan 2023
We set out to look for an additional probe that can help us complete the picture. Even then, we find eBPF useful to explore the linux TCP stack. Tools like stacksnoop or stackcount can be used to understand the flow a network packet is going through when it’s processed and compare different functions to see how “noisy” each function is. Searching for data probing locations consists of a constant trade-off between being too nosy and being blind, and we’re looking for the sweet spot in the middle.
Name a program that doesn't get enough love!
67 projects | reddit.com/r/linux | 29 Dec 2022
How do I intercept executed commands in user space?
3 projects | reddit.com/r/kernel | 26 Dec 2022
If you're interested specifically in bash, you can look into bcc's bashreadline to output user commands. If you're interested in applying security policies to potential user commands, you can also take a look at Tracee although other open source solutions exist here as well.3 projects | reddit.com/r/kernel | 26 Dec 2022
Dwarf-Based Stack Walking Using eBPF
8 projects | news.ycombinator.com | 29 Nov 2022
That's right! There's no "traditional" loops as programs have to be proved to terminate at some point.
That being said, very recently support for bounded loops landed . It's very exciting and useful, and I've seen it reduce verification times significantly, but we can't use this yet as it requires kernel 5.3 or greater, and we would like to support as many users as possible!
What are some alternatives?
libbpf - Automated upstream mirror for libbpf stand-alone build.
zfs - OpenZFS on Linux and FreeBSD
linux - Linux kernel source tree
flamegraph - Easy flamegraphs for Rust projects and everything else, without Perl or pipes <3
libbpf-bootstrap - Scaffolding for BPF application development with libbpf and BPF CO-RE
ebpf-for-windows - eBPF implementation that runs on top of Windows
nokogiri-rust - Ruby FFI wrapper around scraper crate to be used instead of Nokogiri. Status: proof of concept.
bpftrace - High-level tracing language for Linux eBPF
lexbor - Lexbor is development of an open source HTML Renderer library. http://lexbor.com
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.
flamescope - FlameScope is a visualization tool for exploring different time ranges as Flame Graphs.