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Oniux: Kernel-level Tor isolation for any Linux app
Introducing oniux: Kernel-level Tor isolation for any Linux app. This torsocks alternative uses namespaces to isolate Linux applications over the Tor network and eliminate data leaks.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 6,942 posts.
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Adobe Flash 11 is now stable for 64-bit Linux
Adobe Flash Player End of Life general information
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Lolbench: automagically and empirically discovering Rust performance regressions
ramblings by Adam Perry
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ICMP, Ping, and Traceroute – What I wish I was taught (2020)
I wanted to write a post and do a bit of a deepdive into ICMP, ping and traceroute. I’ve found that having a good networking foundation has been a tremendous…
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Interesting new Unix commands/binaries in OS X Mountain Lion
In addition to those on its well-known list of 200+ new features, OS X Mountain Lion also brings along a handful of new UNIX commands and binaries. Most are probably outside the scope of Ask Different (e.g. commands concerning Radius Authentication, Kerberos or Berkeley DB maintainance) but some of them may prove…
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Gridlock vs. Bottlenecks: A visual explanation
"Emails show [Chris Cristie]'s aides did plan bridge gridlock," says Salon . To a transportation engineer, the aides are innocent: bridges can't have gridlock. While we often say "gridlock" to mean "bad traffic," it has a technical meaning.
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Modern Linux in an ancient PC
What is the oldest x86 processor that is still supported by a modern Linux kernel in present time? I asked the above quiz question during the Geekcamp tech conference in Nov 2017 during my emcee role. The theoretical answer as you can glean from the title of this post is the 486 which was first released in 1989. I…
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A Pipeline Made of Airbags
Immutable infrastructure and its tooling has obvious benefits, but the way its current adoption is being done is locking us up in a room whose walls are padded with yaml and we could be losing a lot.
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ReactOS 0.4.14
ReactOS is a free, opensource reimplementation of windows
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Wasmer 5.0
We are thrilled to announce the release of **Wasmer 5.0**, the latest milestone in our journey to make WebAssembly the greatest tool for executing softw...
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FreeBSD ate my RAM
I spent a whole month researching FreeBSD's kernel's virtual memory system to understand why tools like htop, btop and fastfetch report different information about RAM usage. I ended up submitting patches to all of these projects.
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Emacs standing alone on a Linux Kernel
Nano How-To explaining how to setup a root file system with only emacs.
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Performance Testing HTTP/1.1 vs. HTTP/2 vs. HTTP/2 and Server Push for REST APIs
When building web services, a common wisdom is to try to reduce the number of HTTP requests to improve performance.
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Loading CSV File at the Speed Limit of the NVMe Storage
I plan to write a series of articles to discuss some simple but not embarrassingly parallel algorithms. These will have practical usages and would most likely be on many-core CPUs or CUDA GPUs. Today’s is the first one to discuss a parallel algorithm implementation for CSV file parser.
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OpenBSD PF versus FreeBSD PF
I encountered yet another discussion about OpenBSD PF versus FreeBSD PF . For those who are new to the discussion: OpenBSD developers created PF in 2001, and it rapidly improved to become the most approachable open source packet filter. FreeBSD ported PF over to its kernel in 2004, with occasional updates since. Today…
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Setting the TZ environment variable avoids thousands of system calls (2017)
In this article, you can find how setting the TZ environment variable can prevent thousands of system calls.
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Intel Virtualisation: How VT-X, KVM and QEMU Work Together
VT-x is name of CPU virtualisation technology by Intel. KVM is component of Linux kernel which makes use of VT-x. And QEMU is a user-space application which allows users to create virtual machines.…
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E-Stop and Fuel, software that keeps you awake at night
Computer code that I’m writing usually doens’t keep me up at night. After all, it’s only bits & bites and if something doesn’t work properly you can always fix it, that’s the beauty of software.
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Linux on the Xbox 360
Hello and welcome back to The Cool Blog. I've been meaning to write more but I had these things called finals and then I had to move home for the summer and then I got addicted to Satisfactory again and yeah. Anyway I'm back and time for me to share a project of mine that I've been working on since like March.
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Understanding Docker Container Escapes
Trail of Bits recently completed a security assessment of Kubernetes, including its interaction with Docker. Felix Wilhelm’s recent tweet of a Proof of Concept (PoC) “container escape” sparked our interest, since we performed similar research and were curious how this PoC could impact Kubernetes. Quick and dirty way…
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AdapTive-LeArning Speculator System (ATLAS): Faster LLM inference
LLM inference that gets faster as you use it. Our runtime-learning accelerator adapts continuously to your workload, delivering 500 TPS on DeepSeek-V3.1, a 4x speedup over baseline performance without manual tuning.