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Time protection: the missing OS abstraction
Time protection: the missing OS abstraction Ge et al., EuroSys’19 Ever since the prominent emergence of timing-based microarchitectural attacks (e.g. Spectre, Meltdown, and friends) I’ve been…
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 498 posts.
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How Computers Boot Up (2008)
The previous post described [motherboards and the memory map] memory-map in Intel computers to set the scene for the initial phases of boot. Booting is an involved, hacky, multi-stage affair - fun st
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Lessons we learned when debugging a scaling problem
Get a closer look at how we investigated errors originating from scheduled jobs, and how we stumbled upon "the tyranny of the clock."
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GCC eBPF for Linux port has landed
This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project .
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An Intel Programmer Jumps over Wall: First Impressions of ARM SIMD Programming
(the pictured dish is apparently materials for “Buddha Jumps Over The Wall”, named for its ability to seduce away vegetarians – sadly it uses shark fin so has some ethical issues&…
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On lists, cache, algorithms, and microarchitecture
Lists are rather hardware-unfriendly data structure. However, having a closer look at why is that and what can be done to improve this can provide an interesting insight into how high-level algorithms performance is affected by the processor microarchitecture.
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The Architecture of a Large-Scale Web Search Engine, Circa 2019
Our Journey to Microservices, Kubernetes and beyond.
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64 bits ought to be enough for anybody
How quickly can we use brute force to guess a 64-bit number? The short answer is, it all depends on what resources are available. So we’re going to examine this problem starting with the most naive approach and then expand to other techniques involving parallelization. We’ll discuss parallelization at the CPU level…
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Gremlin Free – Run chaos experiments to prevent outages
Get immediate access to Gremlin
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Building a Large-Scale Distributed Storage System Based on Raft
Guest post by Edward Huang, Co-founder & CTO of PingCAP In recent years, building a large-scale distributed storage system has become a hot topic. Distributed consensus algorithms like Paxos and Raft…
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Beating Decades of Optimized C with 80 Lines of Haskell
The Personal blog and musings of Chris Penner, a designer, developer and future opsimath.
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Ginseng: Keeping secrets in registers when you distrust the operating system
Ginseng: keeping secrets in registers when you distrust the operating system Yun & Zhong et al., NDSS’19 Suppose you did go to the extreme length of establishing an unconditional root of …
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How C array sizes become part of the binary interface of a library
We explain how C array sizes become part of the binary interface of a library and examine ways to avoid ABI compatibility issues.
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If you must run Windows 10
Barring divine intervention, Windows 10 Enterprise LTSC 2019 ( formerly LTSB ) may be the least bad option:
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AWS Nitro System
At Tuesday Night Live with James Hamilton at the 2016 AWS re:Invent conference, I introduced the first Amazon Web Services custom silicon. The ASIC I showed formed the foundational core of our second generation custom network interface controllers and, even back in 2016, there was at least one of these ASICs going…
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Latency/throughput tradeoffs, illustrated with coffee
You’re making morning drip coffee. You need to make 2 cups. Do you:
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CUDA Grep
CUDA grep : Manish and Brandon's 15418 final project
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ReactOS 0.4.11 Released
ReactOS is a free, opensource reimplementation of windows
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Debian Riscv64 port in mid 2019
It's been a while since last post (Talk about the Debian GNU/Linux riscv64 port at RISC-V workshop), and sometimes things look very quiet from outside even if the people on the backstage never stop working. So this is an update on the status of this port before the release of buster, which should happen in a few weeks…
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A deep dive into Linux namespaces, part 4
Running processes in isolated network namespaces
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Do-It-Yourself OpenJDK Garbage Collector
Aleksey Shipilёv, JVM/Performance Geek, Shout out at Twitter: @shipilev Questions, comments, suggestions: aleksey@shipilev.net
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What are the differences between OpenBSD and Linux?
Maybe you have been reading recently about the release of OpenBSD 6.5 and wonder, 'What are the differences between Linux and OpenBSD?' I've also been there at some point in the past and these are my conclusions. They also apply, to some extent,
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O(N^2) in CreateProcess
So many possible introductions to this one: Windows 7: Sheesh, I sure am slow at creating processes Windows 10: Hold my beer… Or how about: A) How long does CreateProcess take on Windows? B) How lo…
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HelenOS 0.8
This document contains a summary of changes made to HelenOS since release 0.7.2 .
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eBPF Can't Count?
It is unlikely we can tell you anything new about the extended Berkeley Packet Filter, eBPF for short, if you've read all the great man pages, docs, guides, and some of our blogs out there. But we can tell you a war story, who doesn't like those?
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Good Code Design from Linux
Learn how Linux/FFmpeg C partial codebase is organized to be extensible and act as if it were meant to have “polymorphism”. Specifically, we’re going to briefly explore how Linux …