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Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 533 posts.
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Swift Atomics
I’m delighted to announce Swift Atomics, a new open source package that enables direct use of low-level atomic operations in Swift code. The goal of this library is to enable intrepid systems programmers to start building synchronization constructs (such as concurrent data structures) directly in Swift.
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QEMU should move from C to Rust
Welcome Redditors and HackerNews folks! This post is getting attention outside the QEMU community, so I'd like to highlight two things that...
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Using BPF to Transform SSH Sessions into Structured Events
Teleport’s Enhanced Session Recording feature can add vital extra visibility into commands being run on your systems.
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Writing to the Framebuffer (2018)
I’ve been thinking about cross platform GUIs, and one question led to the next and eventually I was asking: how do pixels end up on the monitor? A pretty neat stack overflow response answers:
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1.1B Taxi Rides Using OmniSciDB and a MacBook Pro
Benchmarks & Tips for Big Data, Hadoop, AWS, Google Cloud, PostgreSQL, Spark, Python & More...
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Jepsen: Dgraph 1.1.1
Dgraph is a graph database which aims to provide scalable, highly-available, and snapshot-isolated transactions over a labeled directed graph, while minimizing network communication for performance. Conceptually, Dgraph stores a set of (entity, attribute, value) triples. Entities (also known as subjects), are compact…
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Massacring C Pointers (2018)
I'm taking a break from debugging books to talk about a calamitous shitshow of textbook writing: Mastering C Pointers: Tools for Programming Power , by Robert J. Traister.
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An Introduction to OpenBSD [video]
A talk on OpenBSD for beginners
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Writing a RISC-V OS in Rust: System Calls
System calls are a way for unprivileged, user applications to request services from the kernel. In the RISC-V architecture, we invoke the call using the ecall instruction. This will cause the CPU to halt what it's doing, elevate privilege modes, and then jump to whatever function handler is stored in the mtvec…
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System Hardening in Android 11
Posted by Platform Hardening Team In Android 11 we continue to increase the security of the Android platform. We have moved to safer def...
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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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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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A Technology Preview of Nginx Support for QUIC and HTTP/3
We announce the technology preview of NGINX support for QUIC+HTTP/3 as pre-release software, available for interoperability testing, feedback, and code contributions. HTTP/3 replaces TCP with QUIC, which is designed to support multiplexed connections more reliably.
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Running a full desktop environment on a Kindle (2019)
Ethical Hacking and Cybersecurity Blog
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Guix Further Reduces Bootstrap Seed to 25%
Blog posts about GNU Guix.
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Jepsen: Redis-Raft 1b3fbf6
Redis is a fast single-threaded data structure server, commonly used as a cache, scratchpad, queue, or coordination mechanism between distributed applications. It offers operations over a broad array of datatypes , including binary blobs, lists, sets, sorted sets, maps, geohashes, counters, channels, streams, and…
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Cost of a thread in C++ under Linux
Almost all our computers are made of several processing cores. Thus it can be efficient to "parallelize" expensive processing in a multicore manner. That is, instead of using a single core to do all of the work, you divide the work among multiple cores. A standard way to approach this problem is to create threads. ……
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In search of 2.11BSD, as originally released
In Search of 2.11BSD, as released Almost all of the BSD releases have been well preserved. If you want to find 1BSD, or 2BSD or 4.3-TAHOE BS...
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The CPU Cost of Networking on a Linux Host
When evaluating networking for a host the focus is typically on latency, throughput or packets per second (pps) to see the maximum load a...
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Where do argc and argv come from?
Continuing on from our tiny snake game , let's explore more into how binaries work on Unix. Let's figure out how our programs come to obtain their argc and argv parameters.
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Bare-Metal Kubernetes with K3s
Learn how to configure K3s on bare-metal to run a Kubernetes cluster with just as much resilience and fault tolerance as a managed service.
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Mastering systemd: Securing and sandboxing applications and services
This series of articles will explore some of my favorite Red Hat Enterprise Linux (RHEL) 8 capabilities that are enabled by systemd. Thus, this series assume...